Engineering Mechanics Commons^™

Multi-Mode Regulation Of The Drying Process Of Industrial Gas, Isamidin Xakimovich Sidikov Pr, Nashvandova Gulruxsor Murot Qizi Phd

Technical science and innovation

Currently, much attention is paid to the issue of energy efficiency of gas processing enterprises. The continuous growth of world prices for energy resources requires constant improvement of the management system, providing the most optimal conditions for the flow of technological processes. A conceptual model of the heat-mass transfer process occurring in the absorber as an object of research has been developed, which characterizes the relationship of the variables involved in the drying process of natural gas, control, measurable and immeasurable, as well as controlled parameters have been selected, which are used to develop and study a mathematical model of …

Modeling Of Asphalt Concrete For Cross-Anisotropic Visco-Elasticity And Heterogeneity, Zafrul Hakim Khan

Civil Engineering ETDs

Asphalt Concrete (AC) is a cross-anisotropic viscoelastic material. This study has developed a methodology to backcalculate the cross-anisotropic properties of the AC layer from the Falling Weight Deflectometer (FWD) sensor and pavement response data from embedded sensors inside a pavement section. This study has also developed a two-way coupled Multiscale Finite Element Model (MsFEM) with Phase Field Fracture (PFF) to study the microstructural heterogeneity and damage of the AC layer based on the actual field loadings. A Finite Difference Time Domain (FDTD) and Machine learning-based backcalculation algorithm were developed to determine the layer thickness and dielectric constant from air-coupled Ground …

Cfrp Delamination Density Propagation Analysis By Magnetostriction Theory, Brandon Eugene Williams

All Dissertations

While Carbon Fiber Reinforced Polymers (CFRPs) have exceptional mechanical properties concerning their overall weight, their failure profile in demanding high-stress environments raises reliability concerns in structural applications. Two crucial limiting factors in CFRP reliability are low-strain material degradation and low fracture toughness. Due to CFRP’s low strain degradation characteristics, a wide variety of interlaminar damage can be sustained without any appreciable change to the physical structure itself. This damage suffered by the energy transfer from high- stress levels appears in the form of microporosity, crazes, microcracks, and delamination in the matrix material before any severe laminate damage is observed. This …

Implementation Of Experimental Static Recrystallization Of High Strength Steel Into Computational Simulation Of Multi-Pass Slab Hot Rolling, S. K. Dasari, S. Ganguly, A. Abutunis, K. Chandrashekhara, M. F. Buchely, S. N. Lekakh, R. J. O'Malley, T. Natarajan

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Microstructural changes and softening due to static recrystallization have a critical influence on thermo-mechanical behavior of high strength steels during industrial multi-pass hot rolling. Numerical simulation using finite element analysis (FEA) can be used to accurately predict the softening behavior during the hot rolling process. Therefore, the implementation of an experimentally defined static recrystallization model into FEA is necessary to get realistic simulation prediction. in this study, the extent of softening during static recrystallization in Si and Mn alloyed high strength steel was measured using double hit tests. a Gleeble™ thermo-mechanical simulator was used to perform the double hit tests …

Impact Of Silicon Ion Irradiation On Aluminum Nitride-Transduced Microelectromechanical Resonators, David D. Lynes, Joshua Young, Eric Lang, Hengky Chandrahalim

Faculty Publications

Microelectromechanical systems (MEMS) resonators use is widespread, from electronic filters and oscillators to physical sensors such as accelerometers and gyroscopes. These devices' ubiquity, small size, and low power consumption make them ideal for use in systems such as CubeSats, micro aerial vehicles, autonomous underwater vehicles, and micro-robots operating in radiation environments. Radiation's interaction with materials manifests as atomic displacement and ionization, resulting in mechanical and electronic property changes, photocurrents, and charge buildup. This study examines silicon (Si) ion irradiation's interaction with piezoelectrically transduced MEMS resonators. Furthermore, the effect of adding a dielectric silicon oxide (SiO₂) thin film is …

Augmenting External Surface Pressures’ Predictions On Isolated Low-Rise Buildings Using Cfd Simulations, Md Faiaz Khaled, Aly Mousaad Aly

Faculty Publications

The aim of this paper is to enhance the accuracy of predicting time-averaged external surface pressures on low-rise buildings by utilizing Computational Fluid Dynamics (CFD) simulations. To achieve this, benchmark studies of the Silsoe cube and the Texas Tech University (TTU) experimental building are employed for comparison with simulation results. The paper is structured into three main sections. In the initial part, an appropriate domain size is selected based on the precision of mean pressure coefficients on the windward face of the cube, utilizing Reynolds Averaged Navier-Stokes (RANS) turbulence models. Subsequently, recommendations regarding the optimal computational domain size for an …

Me-Em Enewsbrief, September 2023, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University

Department of Mechanical and Aerospace Engineering eNewsBrief

No abstract provided.

Switching Methods For Three-Dimensional Rotational Dynamics Using Modified Rodrigues Parameters, Matthew Jarrett Banks

Mechanical & Aerospace Engineering Theses & Dissertations

A rigid body in space has three degrees of rotational freedom. As a result, a minimum of three independent parameters is required to define the three-dimensional orientation of a rigid body. As is well known, every set of three independent parameters has at least one orientation where mathematical or geometrical singularities are encountered; therefore, when the use of a three-parameter representation is desired, a method for singularity avoidance must also be considered. A common practice for singularity avoidance is to switch between parameter sets whose singularities occur at different orientations. With this in mind, modified Rodrigues parameters (MRP) are considered …

Aquaculture In Hydropower Reservoirs, Racheal Macharia

Tanzania Journal of Engineering and Technology (TJET)

There is an undoubtedly existing relationship between water, energy, and food and their interaction with the natural environment and mankind. Climate change is the talk of the day in global development discussions as it intensifies water shortages, energy, poverty, food shortages, and environmental degradation. Currently, most of the hydropower dams constructed in Africa are majorly built to store water for agricultural purposes, control flooding, and generate electricity. Notable projects include the seven forks hydropower stations located on the Tana River in Kenya; Aswan high dam in Egypt; Grand Renaissance dam in Ethiopia; Kariba dam in Zimbabwe and Akosombo in Ghana. …

Me-Em Enewsbrief, June 2023, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University

Department of Mechanical and Aerospace Engineering eNewsBrief

No abstract provided.

Nanoscale Modeling Of Membrane Systems Under Mechanical Deformation In Traumatic Brain Injury Using Molecular Dynamics, Anh Thi Ngoc Vo

Theses and Dissertations

Neuronal membrane disruption and mechanoporation are nanoscale damage mechanisms that critically affect brain cell viability during traumatic brain injury (TBI). These nanoscale cellular impairments are elusive in experiments and necessitate in silico approaches such as molecular dynamics (MD) simulations. Implementing MD, this research aims to investigate the effects of different key factors related to membrane deformation and damage, including force field resolutions, lipid compositions, and loading conditions.

To examine the impact of force field resolution, MD deformation simulations were conducted on 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphatidylcholine (POPC) lipid bilayer membranes, using all-atom (AA), united-atom (UA), and coarse-grained Martini (CG-M) force fields. The mechanical responses …

Development, Experimental Validation, And Progressive Failure Modeling Of An Ultra-Thin High Stiffness Deployable Composite Boom For In-Space Applications, Jimesh D. Bhagatji

Mechanical & Aerospace Engineering Theses & Dissertations

To maximize the capabilities of nano- and micro-class satellites, which are limited by their size, weight, and power, advancements in deployable mechanisms with a high deployable surface area to packaging volume ratio are necessary. Without progress in understanding the mechanics of high-strain materials and structures, the development of compact deployable mechanisms for this class of satellites would be difficult. This research focuses on fabrication, experimental testing, and progressive failure modelling to study the deformation of an ultra-thin composite beam. The research study examines deformation modes of a boom under repetitive pure bending loads using 4-point bending setup. The material and …

A Strong And Ductile Cobalt-Free Solid-Solution Fe30ni30mn30cr10 Multi-Principal Element Alloy From Hot Rolling, Hans Pommerenke, Jiaqi Duan, Nathan Curtis, Victor Delibera, Adam Bratten, Andrew Hoffman, Mario Buchely, Ronald O'Malley, Haiming Wen

Materials Science and Engineering Faculty Research & Creative Works

Most of the face-centered cubic (FCC) multi-principal element alloys (MPEAs) developed thus far contain cobalt. for many applications, it is either required or beneficial to avoid cobalt, since cobalt has long-term activation issue (for nuclear applications), is expensive, and is considered a critical material. in addition, FCC structured solid-solution MPEAs tend to have relatively low strength. an FCC solid-solution Fe30Ni30Mn30Cr10 (at %) MPEA was fabricated via arc melting, followed by homogenization at 1100 °C for 12 h. the alloy was hot rolled at 1100 °C with a total reduction of up to 97 %. the microstructure was characterized, and mechanical …

Assessment Of Bridge Pier Response To Fire, Vehicle Impact, And Air Blast, Chen Fang, Qusai Alomari, Daniel G. Linzell

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

Highway bridges exposed to intentional or unintentional fire followed by combined vehicle impact and air blast are at risk of significant damage and, possibly, collapse. Limited studies examining the complex effects of these extreme demands on bridge support elements and parametrizing their response and damage are found in the open literature. Research that is presented is part of an ongoing numerical investigation examining round, multi-column, reinforced concrete (RC), bridge pier behavior subject to multi-hazard scenarios involving fire, vehicle impact, and air blast. Detailed nonlinear finite element analysis models of single columns and multi-column piers supported by a pile foundation system …

Machine Learning-Based Data And Model Driven Bayesian Uncertanity Quantification Of Inverse Problems For Suspended Non-Structural System, Zhiyuan Qin

All Dissertations

Inverse problems involve extracting the internal structure of a physical system from noisy measurement data. In many fields, the Bayesian inference is used to address the ill-conditioned nature of the inverse problem by incorporating prior information through an initial distribution. In the nonparametric Bayesian framework, surrogate models such as Gaussian Processes or Deep Neural Networks are used as flexible and effective probabilistic modeling tools to overcome the high-dimensional curse and reduce computational costs. In practical systems and computer models, uncertainties can be addressed through parameter calibration, sensitivity analysis, and uncertainty quantification, leading to improved reliability and robustness of decision and …

Me-Em Enewsbrief, March 2023, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University

Department of Mechanical and Aerospace Engineering eNewsBrief

No abstract provided.

The Effects Of Laser Shock Peening On The Fatigue Life Of Additive Manufactured Alsi10mg, Jacob L. Biddlecom

All Dissertations

Additive manufacturing (AM) is becoming a manufacturing process that is well established, even with all the resources and attention that has been brought to it, the field is still lacking some key understandings. Currently, there are certain aspects that are difficult to overcome. Some of the intrinsic obstacles include process-induced defects, such as porosity from lack of fusion and gaseous bubble entrapment, as well as complex thermal gradients. These defects can lead to altered material response especially when looking at the fatigue life. The fatigue behaviors of AM components can change from print to print as well as when compared …

Development Of A Fish Robot Equipped With Novel 3d-Printed Soft Bending Actuators, Steven Steele, Jorge Diaz Rodriguez, Sharun Sripathy, Turaj Ashuri, Saleh Gharaie, Yusun Chang, Amir Ali Amiri Moghadam

Symposium of Student Scholars

This paper reports on design and fabrication of a novel soft fish robot. Application of soft actuators for the fish tail will generates continuum bending motion which resembles the natural motion of the fish. However, most soft actuator mechanisms are complex and have low efficiency. Thus, to address this issue we have developed a 3D printed soft bending actuator which can be actuated with an electromotor. The basic design idea of the soft bending actuator is explained, and iteration of the design showed to create the desired motion for the soft tail. The soft actuator has been successfully integrated with …

A High-Strength Precipitation Hardened Cobalt-Free High-Entropy Alloy, Matthew Luebbe, Jiaqi Duan, Fan Zhang, Jonathan Poplawsky, Hans Pommeranke, Maalavan Arivu, Andrew Hoffman, Mario Buchely, Haiming Wen

Materials Science and Engineering Faculty Research & Creative Works

Recent studies on precipitation-hardened high-entropy alloys (HEAs) demonstrate their high strength and thermal stability, making them promising materials for high-temperature structural applications such as nuclear reactors. However, many existing HEAs contain cobalt (Co), which is unsuitable for nuclear applications because of the long-term activation issue of Co. Co is also expensive and considered a critical material for other applications. Therefore, it is desired to exclude Co from the composition. a Co-free (Fe0.3Ni0.3Mn0.3Cr0.1)88Ti4Al8 HEA was developed and studied in this work. in contrast to previous Co-free HEAs, this alloy is close to Equi atomic in its composition and promises a more …

The Fourth Industrial Revolution: Opportunities And Challenges To The Future Of Mechanical Engineering, Ulingeta O.L. Mbamba

Tanzania Journal of Engineering and Technology (TJET)

This paper provides a conceptual overview of the developments of the Fourth Industrial Revolution (4IR) and derives challenges and opportunities for the future of the mechanical engineering profession. The paper broadly defines 4IR as the fusion of technologies and interaction across physical, digital and biological aspects, while defining mechanical engineering as "a multi-faceted discipline that encompasses the teaching, practice and guidance of others in the development and application of scientific principles to mechanical systems". The paper looks specifically at developments in the Internet of Things (IoT), blockchain technology, robotics, Big Data analytics, biotechnology, nanotechnology, 3D printing and artificial intelligence and …

Designing And Manufacturing Of Vegetable Slicing Machine, Juma Nuhu Msuya

Tanzania Journal of Engineering and Technology (TJET)

Agro-processing industry is faced with a challenge of slicing of vegetables for immediate consumption. This stems from the fact that the traditional slicing methods use bare hands, and knives. This method is faced with shortcomings of inefficiency, poor hygiene, and significant dangers to injury. If vegetables are not sliced, their drying takes longer, may possibly be spoiled, and cannot be stored for future uses. Therefore, this paper strives to design a vegetable slicing machine to increase the efficiency of the drying process as a post-processing step. The study employed a Pugh’s design model to design the machine and manufacture it. …

Me-Em Enewsbrief, December 2022, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University

Department of Mechanical and Aerospace Engineering eNewsBrief

No abstract provided.

Freespan Analysis For Subsea Pipeline Integrity Management Strategy, Nurul Hadi, Muhammad Helmi, Edo Cathaputra, Dedi Priadi, Donanta Dhaneswara

Journal of Materials Exploration and Findings

Abstract. Over a rough seabed or on seabed subject to scour, freespans can occur when contact between a subsea pipeline and the seabed is lost over an acceptable distance. When this exceeds the allowable freespan length, design stresses can be exceeded, and a vortex induced vibration (VIV) response can be initiated, resulting in the risk of fatigue failure. If this is not predicted and controlled properly, it will affect pipeline integrity, leading to expensive rectification and intervention work. Freespan analysis consisted primarily of a screening check in which the as-found freespans from Remotely Operated Vehicle (ROV) or multibeam Side …

Rc Baja Suspension And Steering, Garrett Bailey

All Undergraduate Projects

The RC Baja team set out to engineer and construct a working remote-control device that can compete in the ASME Baja Competition. The students have a focus on either suspension and steering or drivetrain and chassis. This report is centered on the suspension and steering. First, multiple analyses were completed using engineering methods such as mechanical design, statics, strengths of materials, and dynamics for parts of the device. The calculations found in the analysis are then used to create designs for the parts so that they will meet the requirements and be successful in the competition. After the parts are …

Internal Structure And Breakage Behavior Of Biogenic Carbonate Sand Grains, Elieh Mohtashami, C. Guney Olgun, Chenglin Wu, Tara Selly

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This Study Investigates the Mechanical Behavior of Biogenic Carbonate Sands from Puerto Rico at Grain-Scale Level. Micro-Computed Tomography Has Also Been Used to Get Insights on the Internal Structure of These Particles Before and after Loading. the Crushing Strength of These Particles Are Smaller Comparing to the Values Reported for Silica Sands. It Has Also Been Shown that These Particles Have Complex Internal Structure Including a Network of Pores Connected with Channels. This Study Also Demonstrates the Effect of Intragrain Structure of Biogenic Carbonate Sands and Shows How Internal Grain Structure Plays a Role on Particle Fracture.

Effect Of Platelet Length And Stochastic Morphology On Flexural Behavior Of Prepreg Platelet Molded Composites, Siavash Sattar, Benjamin Beltran Laredo, Sergii G. Kravchenko, Oleksandr G. Kravchenko

Mechanical & Aerospace Engineering Faculty Publications

Prepreg platelet molding compound (PPMC) can be used to create structural grade material with a heterogeneous mesoscale morphology. The present work considered various platelet lengths of the prepreg system IM7/8552 to study the effect of platelet length on the flexural behavior of PPMC composite. A progressive failure finite-element analysis was used to understand competing failure modes in PPMC with the different platelet length. The interlaminar and in-plane damage mechanisms were employed to describe complex failure modes within the mesostructure of PPMCs. Experimental results of the flexural tests of the PPMC with different platelet length sizes were used to validate the …

การศึกษาการตรวจหาเชื้อวัณโรคจากภาพย้อมสีทนกรดโดยใช้การเรียนรู้เชิงลึกด้วยเทคนิคการจำแนกและการตรวจจับวัตถุ, ธีริศรา มิคาระเศรษฐ์

Chulalongkorn University Theses and Dissertations (Chula ETD)

การศึกษานี้เป็นการวิเคราะห์ Deep Learning สำหรับตรวจหาเชื้อวัณโรคด้วยวิธีการ Modified Classification และ Object Detection โดยใช้ Pre-Trained Model คือ Enhanced ResNet50 และ AlexNet ในการวิเคราะห์ ซึ่งวิธี Modified Classification มีการนำ Image Processing มาประยุกต์ใช้กับการทดลอง เมื่อ Training ข้อมูล พบว่า ResNet50 เป็น Model ที่มีประสิทธิภาพสูงสุดได้ค่า Accuracy เท่ากับ 92.71% และ Precision เท่ากับ 92.7% เมื่อจัดกลุ่มใหม่สำหรับการวิเคราะห์ แบบ Suspected Positive Low Confidence และ Suspected Positive High Confidence ผลการทดลองพบว่า ResNet50 ยังคงมีประสิทธิภาพที่ดีที่สุด มีค่า Accuracy เท่ากับ 98.06% ค่า Precision เท่ากับ 98.59% ส่วน Suspected Positive High Confidence มีค่า Accuracy เท่ากับ 94.38% และค่า Precision เท่ากับ 91.41% และในการวิเคราะห์ Deep Learning วิธี Object Detection ได้ค่า Precision เท่ากับ 82.81% และ Mean AP เท่ากับ 36.79% จากการเปรียบเทียบการวิเคราะห์ทั้ง 2 Models พบว่า วิธีวิเคาระห์แบบ Modified Classification ได้ผลลัพทธ์ดีกว่า จึงนำไปตรวจร่วมกับวิธีการตรวจของแพทย์ (Doctor …

การออกแบบแกนดามกระดูกต้นขาชนิดยาวที่เหมาะสำหรับคนไทย ด้วยหลักการออกแบบหารูปร่างที่เหมาะสมที่สุด, ดวงกมล สายะบุตร

Chulalongkorn University Theses and Dissertations (Chula ETD)

การรักษากระดูกต้นขาหักมักใช้วิธีผ่าตัดใส่แกนดามกระดูก โดยแกนดามกระดูกที่ใช้ในปัจจุบันถูกออกแบบโดยอิงจากกายวิภาคของชาวคอเคเชียน ซึ่งไม่เหมาะสมสำหรับประชากรชาวเอเชียเนื่องจากความโค้งของโพรงกระดูกไม่เหมาะสมกัน ซึ่งอาจนำไปสู่การทะลุของปลายแกนดามกระดูกได้ งานวิจัยนี้จะนำวิธีการทำ shape optimiztion มาใช้ในการออกแบบแกนดามกระดูกต้นขาชนิดยาวให้เหมาะสมกับกระดูกต้นขาคนไทย โดยจะเลือกกลุ่มตัวอย่างกระดูกต้นขา 10 กระดูกจากกลุ่มประชากรกระดูกต้นขาคนไทย 60 กระดูก โดยเลือกให้ครอบคลุมกลุ่มประชากรกระดูกต้นขาที่มีรูปร่างหลากหลาย โดยใช้วิธีการจัดกลุ่มแบบ k-means clustering แกนดามกระดูกจะถูกทำการ optimize ในกระดูกกลุ่มตัวอย่างทั้ง 10 กระดูกพร้อม ๆ กัน โดยความเค้นที่เกิดในกระดูกทุกชิ้น จะถูกใช้ในการปรับรูปร่างของแกนดามกระดูกดีไซน์ถัดไป ทำวนไปเรื่อย ๆ จนสามารถลดความเค้นในกระดูกทุกชิ้นได้ แกนดามกระดูกที่ออกแบบใหม่นี้ สามารถทำให้ความเค้นที่เกิดขึ้นในกระดูกต้นขาต่ำลงอย่างมีนัยสำคัญ เมื่อเทียบกับแกนดามกระดูกต้นขาในท้องตลาดที่มีรัศมีความโค้ง 1275, 1500, และ 2000 มิลลิเมตร โดยลดลงเฉลี่ย 96.82%, 98.31%, และ 99.15% ตามลำดับ นอกจากนี้ยังทำการทดสอบความแข็งแรงด้วยวิธีไฟไนต์เอลิเมนต์ พบว่าแกนดามกระดูกที่ออกแบบใหม่มีความแข็งแรง สามารถพัฒนาต่อยอดเพื่อไปใช้ในผู้ป่วยจริงได้ในอนาคต

Post-Weld Heat Treatment Effects On Microstructure, Crystal Structure, And Mechanical Properties Of Donor Stir–Assisted Friction Stir Welding Material Of Aa6061-T6 Alloy, Aiman H. Al-Allaq, Manish Ojha, Yousuf S. Mohammed, Srinivasa N. Bhukya, Zhenhua Wu, Abdelmageed A. Elmustafa

Mechanical & Aerospace Engineering Faculty Publications

Friction stir welding (FSW) technology combines heat input from friction and extreme plastic deformation to produce high-quality joints in aluminum and other alloy systems. This necessitates examining the final welded joint’s mechanical and structural properties. Post-weld heat-treated AA6061-T6 alloy that resulted from the application of a Cu donor stir–assisted (CDSA) friction stir welding (FSW) material was examined for crystal structure and mechanical properties. CDSA FSW samples were tested at a constant tool rotational speed of 1400 rpm and a welding translational speed of 1 mm/s. CDSA samples of 20% and 60% thickness of the AA6061-T6 base alloy were selected to …

การพัฒนาชุดทดสอบความล้าดัดสำหรับตะไบทางทันตกรรม, ธีรเมธ เกศโร

Chulalongkorn University Theses and Dissertations (Chula ETD)

วิทยานิพนธ์นี้มุ่งเน้นไปที่การออกแบบและสร้างชุดทดสอบความล้าดัดสำหรับตะไบทางทันตกรรม ที่สามารถวัดจำนวนรอบที่ทำให้เสียหายของตะไบได้โดยตรงผ่านการวิเคราะห์สัญญาณในระบบควบคุมวงปิดของมอเตอร์ โดยที่ไม่จำเป็นต้องใช้วิธีดั้งเดิม ซึ่งเป็นการคำนวณหาจำนวนรอบที่ทำให้เสียหาย ภายใต้สมมติฐานที่ว่าอัตราเร็วในการหมุนของตะไบคงที่ ทั้งที่ในทางปฏิบัติ ตะไบอาจจะไม่ได้หมุนด้วยอัตราเร็วคงที่เสมอไป นอกจากนี้ ในวิทยานิพนธ์ ก็ได้มีการตรวจสอบความน่าเชื่อถือหรือการใช้งานได้ของชุดทดสอบที่ถูกพัฒนาขึ้นมาในแง่มุมต่าง ๆ ผ่านการนำไปทดสอบกับชิ้นงานจริง โดยตะไบรุ่น Zenflex จำนวน 100 ชิ้น ได้ถูกนำไปทดสอบในคลองรากฟันเทียมทั้งหมด 5 รูปร่างที่มีรัศมีความโค้งและมุมโค้งแตกต่างกัน ณ อุณหภูมิห้องและอุณหภูมิร่างกาย ผลการทดสอบแสดงให้เห็นว่า ชุดทดสอบสามารถทำให้ตะไบเสียหายจากความล้าดัดได้ เนื่องจากบนพื้นผิวแตกหักและด้านข้างจุดแตกหักพบลักษณะที่เป็นเอกลักษณ์ของกลไกการเสียหายล้า แต่ไม่พบร่องรอยจากการเสียหายบิด และชุดทดสอบก็สามารถควบคุมให้ตะไบแตกหักที่ตำแหน่งใกล้เคียงกันได้ ไม่ว่าตะไบเหล่านั้นจะถูกทดสอบภายใต้เงื่อนไขใด เนื่องจากตะไบส่วนที่หักมีความยาวใกล้เคียงกันทั้งหมดและใกล้เคียงกับค่าที่ออกแบบไว้ ส่วนแนวโน้มของจำนวนรอบที่ทำให้เสียหายเมื่อแปรค่าตัวแปรต่าง ๆ ในการทดสอบไป ก็มีความสอดคล้องกับแนวโน้มเดียวกันจากงานวิจัยที่ผ่านมา จึงอาจกล่าวได้ว่า ชุดทดสอบมีความน่าเชื่อถือเพียงพอ ในฐานะชุดทดสอบความล้าดัดสำหรับตะไบ นอกจากนี้ จำนวนรอบที่ทำให้เสียหายจากชุดทดสอบหลัก ก็ได้ถูกนำมาเปรียบเทียบกับจำนวนรอบที่ทำให้เสียหายที่คำนวณได้จากวิธีดั้งเดิม โดยข้อมูลที่นำมาคำนวณจะถูกเก็บควบคู่ไปกับการทดสอบหลัก ซึ่งผลปรากฏว่า จำนวนรอบที่ทำให้เสียหายจากวิธีดั้งเดิมมีค่าสูงกว่าจำนวนรอบที่ทำให้เสียหายจากชุดทดสอบหลักที่วัดรอบที่ตะไบหมุนได้โดยตรง