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Full-Text Articles in Engineering Science and Materials

Fatigue Crack Monitoring Under High-Cycle Fatigue Loading Using Large-Area Soft Elastomeric Capacitive Sensor, Jian Li, Xiangxiong Kong, William Collins, Caroline Bennett, Simon Laflamme Jan 2016

Fatigue Crack Monitoring Under High-Cycle Fatigue Loading Using Large-Area Soft Elastomeric Capacitive Sensor, Jian Li, Xiangxiong Kong, William Collins, Caroline Bennett, Simon Laflamme

Review of Progress in Quantitative Nondestructive Evaluation

Fatigue cracks under high-cycle fatigue loading due to normal traffic are one of the major damage modes of steel bridges. Monitoring these cracks is of great importance especially for fracture-critical bridges in order to ensure safe operation by preventing catastrophic failure due to excessive damage. A newly developed soft elastomeric capacitive (SEC) sensor [1] is able to monitor strain changes over a large area of structural surface and resist large deformation due to cracking without being damaged. To examine the feasibility of monitoring fatigue cracks under high-cycle fatigue loading using the SEC sensor, a compact tension specimen is tested under ...


Millimeter Wave Imaging And Evaluation Of Surface-Breaking Cracks In Metal Structures With Surface Pitting And Corrosion, Matt Dvorsky, John Gallion, Reza Zoughi Jan 2016

Millimeter Wave Imaging And Evaluation Of Surface-Breaking Cracks In Metal Structures With Surface Pitting And Corrosion, Matt Dvorsky, John Gallion, Reza Zoughi

Review of Progress in Quantitative Nondestructive Evaluation

Detection of surface-breaking discontinuities (cracks) in metallic surfaces has been a widely researched area using a number of well-established nondestructive testing (NDT) techniques. However, detection of such discontinuities when covered by paint or other dielectric coatings or in the presence of sever surface pitting and corrosion presents a significant challenge. Microwave and millimeter wave NDT techniques, specifically designed for surface-breaking crack detection and evaluation in metals, have shown great potential for overcoming some of these challenges. The ability of these waves to readily penetrate dielectric coatings and corrosion layers, in addition to the fact that reflection properties of a surface-breaking ...


Novel Wavelet Threshold Denoising Method In Axle Press-Fit Zone Ultrasonic Detection, Chaoyong Peng, Xiaorong Gao, Jianping Peng, Ai Wang Jan 2016

Novel Wavelet Threshold Denoising Method In Axle Press-Fit Zone Ultrasonic Detection, Chaoyong Peng, Xiaorong Gao, Jianping Peng, Ai Wang

Review of Progress in Quantitative Nondestructive Evaluation

Axles are important part of railway locomotives and vehicles. Periodic ultrasonic inspection of axles can effectively detect and monitor axle fatigue cracks. However, in the axle press-fit zone, the complex interface contact condition reduces the signal-noise ratio (SNR). Therefore, the probability of false positives and false negatives increases. In this work, a novel wavelet threshold function is created to remove noise and suppress press-fit interface echoes in axle ultrasonic defect detection. The exponential threshold function proposed by Andria [1] can't get a gradual curve for later optimum searching process; and the novel wavelet threshold function with two variables is ...


Study Of Flexural Stress-Induced Surface Wave Velocity Variations In Concrete, Agustin Spalvier, James Bittner, John S. Popovics Jan 2016

Study Of Flexural Stress-Induced Surface Wave Velocity Variations In Concrete, Agustin Spalvier, James Bittner, John S. Popovics

Review of Progress in Quantitative Nondestructive Evaluation

This investigation studies the behavior of surface wave velocity in concrete specimens subjected to low levels of compressive and tensile stress in beams from applied flexural loads. Beam specimens are loaded in a 4-point-load bending configuration, generating uniaxial compression and tension stress fields at the beams’ top and bottom surfaces, respectively. Surface waves are generated through contactless air-coupled transducers and received through contact accelerometers. Results show a clear distinction in responses from compression and tension zones, where velocity increases in the former and decreases in the latter, with increasing load levels. These trends agree with existing acoustoelastic literature. Surface wave ...


Models For Ut Inspection Of Bolthole Cracks In Layered Structures, Robert Grandin, Tim Gray, Ron Roberts Jan 2016

Models For Ut Inspection Of Bolthole Cracks In Layered Structures, Robert Grandin, Tim Gray, Ron Roberts

Review of Progress in Quantitative Nondestructive Evaluation

Due to the geometrical complexities of bolted, layered airframe structures, the application of Model Assisted Probability of Detection, or MAPOD, is an important tool for helping to assess the ultrasonic inspectability of those components. Of particular importance is the need to inspect for cracks on or near boltholes in those structures. This presentation describes the development and testing of analytical computer models of and their application to bolthole crack inspection. The modeling approach includes approximate, paraxial, bulk-wave models as well as more rigorous, analytical models that include both bulk and surface/plate modes. The simpler models have the flexibility and ...


The Early Stage Wheel Fatigue Crack Detection Using Eddy Current Pulsed Thermography, Jianping Peng, Kang Zhang, Kai Yang, Zhu He, Yu Zhang, Chaoyong Peng, Xiaorong Gao Jan 2016

The Early Stage Wheel Fatigue Crack Detection Using Eddy Current Pulsed Thermography, Jianping Peng, Kang Zhang, Kai Yang, Zhu He, Yu Zhang, Chaoyong Peng, Xiaorong Gao

Review of Progress in Quantitative Nondestructive Evaluation

The in-service wheel-set quality is one of critical challenges for railway safety, especially for the high-speed train. The defect in wheel tread, initiated by rolling contact fatigue (RCF) damage, is one of the most significant phenomena and has serious influence on rail industry. Eddy current pulsed thermography (ECPT) is studied to compensate the Ultrasonic Testing (UT) method for detection these early stage of fatigue cracks in wheel tread. This paper proposes several induction coils, such as linear coil, Yoke coil and Helmholtz coils, based ECPT method to meet the imaging of multiple cracks and irregular surface in wheel tread through ...


Early Detection Of Materials Degradation - Still A Challenge For Conventional And Advanced Materials, To Be Applied For Lightweight Constructions, Norbert Meyendorf Jan 2016

Early Detection Of Materials Degradation - Still A Challenge For Conventional And Advanced Materials, To Be Applied For Lightweight Constructions, Norbert Meyendorf

Review of Progress in Quantitative Nondestructive Evaluation

Lightweight components for transportation and aerospace applications are designed for an estimated lifecycle, taking expected mechanical and environmental loads into account. The main reason for catastrophic failure of components within the expected lifecycle are material inhomogeneities, like pores and inclusions as origin for fatigue cracks, that have not been detected by NDE. However, material degradation by designed or unexpected loading conditions or environmental impacts can accelerate the crack initiation or growth. Conventional NDE methods are usually able to detect cracks that are formed at the end of the degradation process, but methods for early detection of fatigue, creep, and corrosions ...


Structural Health Monitoring Of Positive Feedback Damage Mechanisms Using The Failure Forecast Method, J. Corcoran, P. Cawley Jan 2016

Structural Health Monitoring Of Positive Feedback Damage Mechanisms Using The Failure Forecast Method, J. Corcoran, P. Cawley

Review of Progress in Quantitative Nondestructive Evaluation

Frequently, the objective of structural integrity assessment is the estimation of the remnant life of a component. Advances in batteries, wireless communication and low power electronics have led to increased development and use of permanently installed sensors. The availability of frequent, in-situ data provides new opportunities in data interpretation; notably frequent data collection enables rate measurements. Numerous failure mechanisms, for example creep, fatigue and creep crack growth, are examples of positive feedback loops, where the extent of damage causes an increased rate of damage growth. Mechanisms of this type are characterised by an increasing rate of damage towards failure and ...


High-Frequency Guided Ultrasonic Waves To Monitor Corrosion Thickness Loss, Paul Fromme, Fabian Bernhard, Bernard Masserey Jan 2016

High-Frequency Guided Ultrasonic Waves To Monitor Corrosion Thickness Loss, Paul Fromme, Fabian Bernhard, Bernard Masserey

Review of Progress in Quantitative Nondestructive Evaluation

Corrosion due to adverse environmental conditions can occur for a range of industrial structures, e.g., ships and offshore oil platforms. Pitting corrosion and generalized corrosion can lead to the reduction of the strength and thus degradation of the structural integrity. The nondestructive detection and monitoring of corrosion damage in difficult to access areas can be achieved using high frequency guided ultrasonic waves propagating along the structure. Using standard ultrasonic transducers with single sided access to the structure, the two fundamental Lamb wave modes were selectively generated, penetrating through the complete thickness of the structure. The wave propagation and interference ...


Laser Ultrasonic Characterisation Of Membranes For Use As Mems, Rs Edwards, Lq Zhou, M Pearce, R Prince, M Myronov, Va Shah, Dr Leadley, O Trushkevych Jan 2016

Laser Ultrasonic Characterisation Of Membranes For Use As Mems, Rs Edwards, Lq Zhou, M Pearce, R Prince, M Myronov, Va Shah, Dr Leadley, O Trushkevych

Review of Progress in Quantitative Nondestructive Evaluation

Germanium (Ge) on Silicon (Si) has the potential to produce a wide variety of devices, including sensors, solar cells and transistors. Modification of these materials so that a suspended membrane layer is formed, through removing regions of the Si substrate, offers the potential for sensors with a more rapid response and higher sensitivity. Such membranes are a very simple micro-electronic mechanical system (MEMS). It is essential to ensure that the membranes are robust against shock and vibration, with well-characterised resonant frequencies, prior to any practical application.

We present work using laser interferometry to characterise the resonant modes of membranes produced ...


Automated X-Ray Quality Control Of Catalytic Converters, N. Shashishekhar, Veselitza Jan 2016

Automated X-Ray Quality Control Of Catalytic Converters, N. Shashishekhar, Veselitza

Review of Progress in Quantitative Nondestructive Evaluation

Catalytic converters are devices attached to the exhaust system of automobile or other engines to eliminate or substantially reduce polluting emissions. They consist of coated substrates enclosed in a stainless steel housing. The substrate is typically made of ceramic honeycombs; however stainless steel foil honeycombs are also used. The coating is usually a slurry of alumina, silica, rare earth oxides and platinum group metals. The slurry also known as the wash coat is applied to the substrate in two doses, one on each end of the substrate; in some cases multiple layers of coating are applied. X-ray imaging is used ...


Experimental Characterization Of Sulfate Damage Of Concrete Based On The Harmonic Wave Modulation Technique, Tinyuan Yin, Wanlin Meng, Neda Talebzadeh, Jun Chen Jan 2016

Experimental Characterization Of Sulfate Damage Of Concrete Based On The Harmonic Wave Modulation Technique, Tinyuan Yin, Wanlin Meng, Neda Talebzadeh, Jun Chen

Review of Progress in Quantitative Nondestructive Evaluation

The objective of this paper is to characterize cracking progression of concrete samples subjected to sulfate attack cycles by employment of a nonlinear wave modulation technique. The sidebands in frequency domain (f1±f2) are produced due to the modulation of two ultrasonic waves (high frequency f1 and low frequency f2) and the relative amplitude of sidebands is defined as the nonlinear parameter considered as a caliber for structural damage. Different from previous work where the low frequency signal was generated by the instrumented hammer, the low frequency signal in this research is a harmonic wave produced by an electromagnetic exciter ...


Extraction Of Depth Profiles Of Third Order Elastic Constants In Cracked Media, Marek Rjelka, Bernd Köhler, Andreas Mayer Jan 2016

Extraction Of Depth Profiles Of Third Order Elastic Constants In Cracked Media, Marek Rjelka, Bernd Köhler, Andreas Mayer

Review of Progress in Quantitative Nondestructive Evaluation

Elastic constants of components are usually determined by tensile tests in combination with ultrasonic experiments. However, these properties may change due to e.g. mechanical treatments or service conditions during their lifetime. Knowledge of the actual material parameters is key to the determination of quantities like residual stresses present in the medium.

In this work the acoustic nonlinearity parameter (ANP) and the nonlinear coupling parameter for three-wave mixing of acoustic modes guided at surfaces, interfaces and edges of the elastic medium is examined through the derivation of an evolution equation for the amplitude of the second harmonic or the guided ...


In Situ Material Characterization In Harsh Environments, Bernard Wernsman Jan 2016

In Situ Material Characterization In Harsh Environments, Bernard Wernsman

Review of Progress in Quantitative Nondestructive Evaluation

Materials are utilized in harsh environments such as nuclear reactors, autoclaves, engines, steam generators, down wells, refineries, etc. Understanding how these materials behave in these harsh environments is paramount for designing robust systems. Traditionally, the material behavior is determined by placing the material in the form needed for a material parameter measurement (i.e. corrosion growth coupon, creep specimen, compact-tension (CT) specimen, etc.) into its operating environment for a time, removing it, and then measuring the material parameter in a laboratory environment (the so called cook then look method) and then repeating this process. Although this method gives excellent results ...


Non-Contact Evaluation Of Residual Stress In Metals With Laser-Generated Surface Acoustic Waves And A Point-Like Fiber-Optic Sagnac Detector, Łukasz Ambrozinski, Ivan Pelivanov, Michael B. Prime, Matthew O’Donnell Jan 2016

Non-Contact Evaluation Of Residual Stress In Metals With Laser-Generated Surface Acoustic Waves And A Point-Like Fiber-Optic Sagnac Detector, Łukasz Ambrozinski, Ivan Pelivanov, Michael B. Prime, Matthew O’Donnell

Review of Progress in Quantitative Nondestructive Evaluation

Stress can remain in a material after the original load is removed. It can be purposely introduced to improve the properties of structural components, but can also be undesired, shortening a component’s lifetime, changing its original geometry or even leading to failure.

There is a large spectrum of problems where residual stress must be evaluated. An acousto-elastic approach is non-destructive and uses stress-dependent alterations in ultrasound (US) speed of bulk or surface modes [1]. However, these alterations are incredibly small (10-3 ÷ 10-5) and, thus, accurate measurement of both the US wave speed and propagation distance is required. Thickness measurement ...


Investigation On The Damage Localization In A Pipe Using Torsional Guided Waves And Sensor Array Reconstruction Techniques, Erick Rojas, Karla Fernandez, Arturo Baltazar, Jorge Aranda Jan 2016

Investigation On The Damage Localization In A Pipe Using Torsional Guided Waves And Sensor Array Reconstruction Techniques, Erick Rojas, Karla Fernandez, Arturo Baltazar, Jorge Aranda

Review of Progress in Quantitative Nondestructive Evaluation

Continuous monitoring for damage detection and localization on large fluid filled pipe-like structures is needed. To address this problem we propose the use of a Macro Fiber Composite (MFC) sensor to generate the first order torsional mode and to detect scatter signals from the discontinuities by an EMAT sensor positioned in various locations on the surface of the structure to simulate an array of sensors. Signals are post-processed with a developed algorithm based on entropy and arrival time. Numerical results were obtained for simulated signals and experimentally tested on a stainless steel pipe A-36 (43.6 and 48.2 mm ...


Subsurface Inclusion Quantification Using Multi-Frequency Ultrasonic Surface Waves, Musa Norouzian, Joseph A. Turner, Allen J. Fuller, Brent M. Wilson Jan 2016

Subsurface Inclusion Quantification Using Multi-Frequency Ultrasonic Surface Waves, Musa Norouzian, Joseph A. Turner, Allen J. Fuller, Brent M. Wilson

Review of Progress in Quantitative Nondestructive Evaluation

Rolling contact fatigue (RCF) is one of the major sources of subsurface-initiated spalling in bearing components. These types of spalls initiate in regions where microcracks are formed due to a localized increase in stress from inclusions near the surface. Ultrasonic bulk inspection is a powerful method to detect defects in a large volume of steel. However, inclusions near the surface of a sample can elude detection because reflections from the inclusion can be masked by reflections from the sample surface. This limitation can be eliminated if ultrasonic surface wave methods are used for inspection. Surface waves have material displacements localized ...


Localization And Characterization Of Fatigue Cracks Around Fastener Holes Using Spherically Focused Ultrasonic Probes, Deborah Hopkins, Marvin Datuin, John Aldrin, Mark Warchol, Lyudmila Warchol, David Forsyth, Charlie Buynak, Eric Lindgren Jan 2016

Localization And Characterization Of Fatigue Cracks Around Fastener Holes Using Spherically Focused Ultrasonic Probes, Deborah Hopkins, Marvin Datuin, John Aldrin, Mark Warchol, Lyudmila Warchol, David Forsyth, Charlie Buynak, Eric Lindgren

Review of Progress in Quantitative Nondestructive Evaluation

Results are presented from laboratory experiments and simulations designed to determine the ability to localize and characterize fatigue cracks around fastener holes using spherically fo-cused ultrasonic (UT) probes for shear-wave inspections. In designing and evaluating inspection protocols, the number of cases that can be studied through laboratory experiments is severely limited by cost and time constraints. Simulations therefore stand to play a significant role in the design and optimization of inspection strategies for those conditions that can be accurately mod-eled. Moving from benchmark studies for relatively simple geometries toward more realistic conditions creates significant challenges. For shear-wave inspections of fastener ...


Detection And Characterization Of Disbond Damage At Steel-Concrete Interfaces Using Attenuation Characteristics Of Guided Waves, Homin Song, John S. Popovics Jan 2016

Detection And Characterization Of Disbond Damage At Steel-Concrete Interfaces Using Attenuation Characteristics Of Guided Waves, Homin Song, John S. Popovics

Review of Progress in Quantitative Nondestructive Evaluation

This paper presents a frequency-wavenumber (f-k) domain signal processing approach for guided plate wave data. The guided waves propagate in a steel plate bonded to concrete substrate, and the analysis aims to characterize the steel-concrete interface. The modal solutions of guided waves in well-bonded, partially bonded, and dis-bonded interface cases are obtained using the Global Matrix technique. The analytical solutions demonstrate that the attenuation characteristics of the fundamental symmetric (S0) guided wave mode in the steel plate are sensitive to the steel-concrete interface bond condition. The attenuation behavior of the S0 mode are captured and extracted from the complete guided ...


Focused Ultrasonic Beam Behavior At A Stress-Free Boundary And Applicability For Measuring Nonlinearity Parameter In A Reflection Mode, Hyunjo Jeong, Shuzeng Zhang, Jongboem Kim, Xiongbing Li Jan 2016

Focused Ultrasonic Beam Behavior At A Stress-Free Boundary And Applicability For Measuring Nonlinearity Parameter In A Reflection Mode, Hyunjo Jeong, Shuzeng Zhang, Jongboem Kim, Xiongbing Li

Review of Progress in Quantitative Nondestructive Evaluation

Measurements of the acoustic nonlinearity parameter β are frequently made for early detection of damage in various materials. The practical implementation of the measurement technique has been limited to the through-transmission setup for determining the nonlinearity parameter of the second harmonic wave. For the purpose of practical applications, a pulse-echo measurement technique is more desirable which enables the single-side access of test components. The issue with using the second harmonic wave reflected from the stress-free interface is that such a boundary destructively alters the nonlinear generation process and consequently makes it difficult to obtain the reliable results of β.

In ...


Full-Field Structural Dynamics By Video Motion Manipulations, Yongchao Yang, Charles Farrara, David Mascarenasa Jan 2016

Full-Field Structural Dynamics By Video Motion Manipulations, Yongchao Yang, Charles Farrara, David Mascarenasa

Review of Progress in Quantitative Nondestructive Evaluation

Structures with complex geometries, material properties, and boundary conditions, exhibit spatially local, temporally transient, dynamic behaviors. High spatial and temporal resolution vibration measurements and modeling are thus required for high-fidelity characterization, analysis, and prediction of the structure’s dynamic phenomena. For example, high spatial resolution mode shapes are needed for accurate vibration-based damage localization. Also, higher order vibration modes typically contain local structural features that are essential for high-fidelity dynamic modeling of the structure. In addition, while it is possible to build a highly- refined mathematical model (e.g., a finite element model) of the structure, it needs to be ...


Evaluation Of Residual Stress In Ag/Glass Thin Films Using Dispersion Characteristic Of Rayleigh Wave, Taesung Park, Dongryul Kwak, Ikkeun Park Jan 2016

Evaluation Of Residual Stress In Ag/Glass Thin Films Using Dispersion Characteristic Of Rayleigh Wave, Taesung Park, Dongryul Kwak, Ikkeun Park

Review of Progress in Quantitative Nondestructive Evaluation

In this study, we suggest a method to measure residual stress of thin films nondestructively using dispersion characteristics of Rayleigh wave. Silver films were deposited on glass substrate by controlling the fabrication condition such as DC power and Ar pressure in order to verify a change of the surface acoustic wave velocity depending on the residual stress. The surface acoustic wave velocity of the thin films with different residual stress was measured using the V(z) curve method of scanning acoustic microscopy. To verify the actual residual stress in thin film, the X-ray diffraction method was applied. The change of ...


Residual Stress Nondestructive Testing Technology Using Nonlinear Ultrasonic, Chunguang Xu, Junfeng Wang, Jianfeng Song Jan 2016

Residual Stress Nondestructive Testing Technology Using Nonlinear Ultrasonic, Chunguang Xu, Junfeng Wang, Jianfeng Song

Review of Progress in Quantitative Nondestructive Evaluation

The nonlinear ultrasonic theory is that ultrasonic waves interact with micro defects and the higher harmonic waves appear when the ultrasonic waves propagate in materials. The acoustic nonlinear parameters are sensitive to micro defects in the nonlinear materials. They are used to characterize the nonlinear characteristics of materials. The nonlinear ultrasonic theories and the characterization of stress in metal by the nonlinear ultrasonic are studied. The nonlinear ultrasonic testing system is built to detect the received signals which propagate in materials with stress. The variation trends of the nonlinear parameters is studied in tensile testing. This paper studies the relationship ...


Hall Coefficient Measurement For Residual Stress Assessment In Precipitation Hardened In718 Nickel-Base Superalloy, Dheeraj Velicheti, Peter B. Nagy, Waled Hassan Jan 2016

Hall Coefficient Measurement For Residual Stress Assessment In Precipitation Hardened In718 Nickel-Base Superalloy, Dheeraj Velicheti, Peter B. Nagy, Waled Hassan

Review of Progress in Quantitative Nondestructive Evaluation

We investigated the feasibility of residual stress assessment based on Hall coefficient measurements in precipitation hardened IN718 nickel-base superalloy. As a first step, we studied the influence of microstructural variations on the magnetogalvanic properties of IN718 nickel-base superalloy. We found that the Hall coefficient of IN718 increases from ≈8.1×10-11 m3 /C in its fully annealed state of 15 HRC Rockwell hardness to ≈9.8×10-11 m3 /C in its fully hardened state of 45 HRC. Second, we studied the influence of cold work, i.e., plastic deformation at room temperature, and found that cold work had negligible effect ...


E-Book Of Abstracts, 41st Annual Review Of Progress In Quantitative Nondestructive Evaluation Conference, Center For Nondestructive Evaluation, Iowa State University Jul 2014

E-Book Of Abstracts, 41st Annual Review Of Progress In Quantitative Nondestructive Evaluation Conference, Center For Nondestructive Evaluation, Iowa State University

Review of Progress in Quantitative Nondestructive Evaluation

Abstracts of papers presented at the 2014 Review of Progress in Quantitative Nondestructive Evaluation (QNDE) conference held in Boise, Idaho from July 20–25, 2014.


Abstracts, Review Of Progress In Quantitative Nondestructive Evaluation (Baltimore, Md, July 21–26, 2013), Center For Nondestructive Evaluation, Iowa State University Jul 2013

Abstracts, Review Of Progress In Quantitative Nondestructive Evaluation (Baltimore, Md, July 21–26, 2013), Center For Nondestructive Evaluation, Iowa State University

Review of Progress in Quantitative Nondestructive Evaluation

Abstracts of papers presented at the 2013 Review of Progress in Quantitative Nondestructive Evaluation (QNDE) conference held in Baltimore, Maryland from July 21–26, 2013.


Abstracts, Review Of Progress In Quantitative Nondestructive Evaluation (Denver, Co, July 15–20, 2012), Center For Nondestructive Evaluation, Iowa State University Jul 2012

Abstracts, Review Of Progress In Quantitative Nondestructive Evaluation (Denver, Co, July 15–20, 2012), Center For Nondestructive Evaluation, Iowa State University

Review of Progress in Quantitative Nondestructive Evaluation

Abstracts of papers presented at the 2012 Review of Progress in Quantitative Nondestructive Evaluation (QNDE) conference held in Denver, Colorado from July 15–20, 2012.


Abstracts, Review Of Progress In Quantitative Nondestructive Evaluation (Kingston, Ri, July 26–31, 2009), Center For Nondestructive Evaluation, Iowa State University Jul 2009

Abstracts, Review Of Progress In Quantitative Nondestructive Evaluation (Kingston, Ri, July 26–31, 2009), Center For Nondestructive Evaluation, Iowa State University

Review of Progress in Quantitative Nondestructive Evaluation

Abstracts of papers presented at the 2009 Review of Progress in Quantitative Nondestructive Evaluation (QNDE) conference held in Kingston, Rhode Island from July 26–31, 2009.


Abstracts, Review Of Progress In Quantitative Nondestructive Evaluation (Chicago, Il, July 20–25, 2008), Center For Nondestructive Evaluation, Iowa State University Jul 2008

Abstracts, Review Of Progress In Quantitative Nondestructive Evaluation (Chicago, Il, July 20–25, 2008), Center For Nondestructive Evaluation, Iowa State University

Review of Progress in Quantitative Nondestructive Evaluation

Abstracts of papers presented at the 2008 Review of Progress in Quantitative Nondestructive Evaluation (QNDE) conference held in Chicago, Illinois from July 20–25, 2008.


Abstracts, Review Of Progress In Quantitative Nondestructive Evaluation (Golden, Co, July 22–27, 2007), Center For Nondestructive Evaluation, Iowa State University Jul 2007

Abstracts, Review Of Progress In Quantitative Nondestructive Evaluation (Golden, Co, July 22–27, 2007), Center For Nondestructive Evaluation, Iowa State University

Review of Progress in Quantitative Nondestructive Evaluation

Abstracts of papers presented at the 2007 Review of Progress in Quantitative Nondestructive Evaluation (QNDE) conference, held in Golden, Colorado from July 22–27, 2007.