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Full-Text Articles in Engineering

Freeze-Thaw Resistance Of Concrete: Insight From Microstructural Properties, Sam Adu-Amankwah, Leon Black Dr, M Zajac, J Skoceck, M Ben Haha Nov 2019

Freeze-Thaw Resistance Of Concrete: Insight From Microstructural Properties, Sam Adu-Amankwah, Leon Black Dr, M Zajac, J Skoceck, M Ben Haha

International Conference on Durability of Concrete Structures

Composite cements offer low carbon alternatives to conventional CEM I. These binders also generally tend to perform better than CEM I in aggressive chemical environments. However, their freeze-thaw resistance, evident through surface scaling and internal damage is usually impaired. Postulated theories on freeze-thaw induced damage do not fully explain the origin of this weakness in composite cement concretes.

This paper systematically presents the phase assemblage changes associated with the freeze-thaw of concrete specimen made from composite cements with and without limestone. The freeze-thaw test was performed on concrete according to CIF method based on CEN/TR 15177 and the corresponding cement …


Using High Resolution Images To Investigate Fatigue Crack Initiation Of Alloys At The Microstructural Level, Michael P. Reinhold, Alberto Mello, Michael Sangid Aug 2017

Using High Resolution Images To Investigate Fatigue Crack Initiation Of Alloys At The Microstructural Level, Michael P. Reinhold, Alberto Mello, Michael Sangid

The Summer Undergraduate Research Fellowship (SURF) Symposium

Microstructural features within a material dictate the material’s mechanical behavior and lead to localized strains as the sample is deformed. In order to further understand structural failure, an improved understanding of how microstructural features influence failure is necessary. Fatigue is one common mode of failure for aerospace applications, and a better understanding of the conditions of crack initiation can provide information that ultimately may increase longevity of aerospace systems. This paper investigates the hypothesis that fatigue crack initiation for a cyclically loaded sample is correlated to areas of higher localized strain. The experiment was conducted using a Ti-6Al-4V sample subjected …


Microstructures And Properties Of Sintered Cu–Mos2/Cu Functional Gradient Materials, Aiqin Wang Oct 2016

Microstructures And Properties Of Sintered Cu–Mos2/Cu Functional Gradient Materials, Aiqin Wang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Study On The Impact Abrasive Wear Of New Super-High Manganese Steel, Wenyan Wang Oct 2016

Study On The Impact Abrasive Wear Of New Super-High Manganese Steel, Wenyan Wang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Effect Of Er On Microstructure And Electrochemical Performance Of Al–Zn–In Anode, Zhengbing Xu Oct 2016

Effect Of Er On Microstructure And Electrochemical Performance Of Al–Zn–In Anode, Zhengbing Xu

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


On The Microstructure And Properties Of The Pmig Welding Joint Of A7n01 Aluminum Alloy Enhanced By Supersonic Wave And Aging, Tainquan Liang, Qiumei Qin, Xiaomei Mo, Xiaolian Zhao, Jianmin Zeng Oct 2016

On The Microstructure And Properties Of The Pmig Welding Joint Of A7n01 Aluminum Alloy Enhanced By Supersonic Wave And Aging, Tainquan Liang, Qiumei Qin, Xiaomei Mo, Xiaolian Zhao, Jianmin Zeng

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Effect Of Ti Content On Microstructure And Strength Of The Self-Joining Of Zrb2–Sic With Pd–Co–Ti Filler Metals, Jie Zhang, Jiayin Liu, Chungfeng Liu, Tianpeng Wang Oct 2016

Effect Of Ti Content On Microstructure And Strength Of The Self-Joining Of Zrb2–Sic With Pd–Co–Ti Filler Metals, Jie Zhang, Jiayin Liu, Chungfeng Liu, Tianpeng Wang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Simulation Of Two Kinds Of Hot Stamping Processes Of Ultra High-Strength Steel, Hao Zhao, Zhongwen Xing, Hongliang Yang Oct 2016

Simulation Of Two Kinds Of Hot Stamping Processes Of Ultra High-Strength Steel, Hao Zhao, Zhongwen Xing, Hongliang Yang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Void Closure And The Sensitivity Analysis Of The Process Parameters During Forging Of Large Steel Ingot, Bo Jiang, Yazheng Liu, Jianlin Sun, Guanglei Liu, Zhilin Wang, Zhigang Zhao Oct 2016

Void Closure And The Sensitivity Analysis Of The Process Parameters During Forging Of Large Steel Ingot, Bo Jiang, Yazheng Liu, Jianlin Sun, Guanglei Liu, Zhilin Wang, Zhigang Zhao

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Effect Of Heat Input On Microstructure And Formability Of Dp980 Steel Welded Joints By Fiber Laser Welding, Qian Sun Oct 2016

Effect Of Heat Input On Microstructure And Formability Of Dp980 Steel Welded Joints By Fiber Laser Welding, Qian Sun

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Weld Thermal Simulation Of Crmov With Pwht In Type Iv Region, Bin Xu Oct 2016

Weld Thermal Simulation Of Crmov With Pwht In Type Iv Region, Bin Xu

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


A Combined Experimental And Simulation Study Of Deformation Mechanisms Of Order Precipitates In Ni-Based Superalloys, Duchao Lv, Don Mcallister, Stephen Niezgoda, Mike J. Mills, Yunzhi Wang Oct 2016

A Combined Experimental And Simulation Study Of Deformation Mechanisms Of Order Precipitates In Ni-Based Superalloys, Duchao Lv, Don Mcallister, Stephen Niezgoda, Mike J. Mills, Yunzhi Wang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Ferromagnetic Shape Memory Alloy Microwires, Xuexi Zhang, Mingfang Qian, Hehe Zhang, Lin Geng Oct 2016

Ferromagnetic Shape Memory Alloy Microwires, Xuexi Zhang, Mingfang Qian, Hehe Zhang, Lin Geng

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Transparent Glass Ceramic Containing Ndf3 Nanocrystals For Magneto-Optical Application, Wei Li, Youting Huang, Wenzhe Chen Oct 2016

Transparent Glass Ceramic Containing Ndf3 Nanocrystals For Magneto-Optical Application, Wei Li, Youting Huang, Wenzhe Chen

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Finite Element Simulation And Experimental Study Of The Effect Of Combining Ultrasonic Vibration With Ecap Process On Pure Aluminum 1050, Saeed Bagherzadeh, Yanfei Liu, Karen Abrinia, Qingyou Han Oct 2016

Finite Element Simulation And Experimental Study Of The Effect Of Combining Ultrasonic Vibration With Ecap Process On Pure Aluminum 1050, Saeed Bagherzadeh, Yanfei Liu, Karen Abrinia, Qingyou Han

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Effect Of Preliminary Heat Treatment On Change In Microstructure Of Brass Cuzn36 During Pressing In Equal Channel Step Matrix, Irina Volokitina, Georgy Kurapov Oct 2016

Effect Of Preliminary Heat Treatment On Change In Microstructure Of Brass Cuzn36 During Pressing In Equal Channel Step Matrix, Irina Volokitina, Georgy Kurapov

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Low-Temperature Bainite Transformation Behavior And Microstructure And Mechanical Properties Of A Medium-Carbon High-Strength Steel For Railway Forging Upper Core Plate, Xiaofeng Qin, Shihai Cui, An Wang Oct 2016

Low-Temperature Bainite Transformation Behavior And Microstructure And Mechanical Properties Of A Medium-Carbon High-Strength Steel For Railway Forging Upper Core Plate, Xiaofeng Qin, Shihai Cui, An Wang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Investigation Of Microstructure And Mechanical Properties Of Cp–Ti/Q345 Filled With Cu-Based Wires, Min Zhang, Qiaoling Chu, Jihong Li, Qingyang Fan, Weiwei Xie Oct 2016

Investigation Of Microstructure And Mechanical Properties Of Cp–Ti/Q345 Filled With Cu-Based Wires, Min Zhang, Qiaoling Chu, Jihong Li, Qingyang Fan, Weiwei Xie

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Effect Of Ni Content And Brazing Temperature On The Self Joining Of Zrb2–Sic, Jiayin Liu, Jie Zhang, Chunfeng Liu, Tianpeng Wang Oct 2016

Effect Of Ni Content And Brazing Temperature On The Self Joining Of Zrb2–Sic, Jiayin Liu, Jie Zhang, Chunfeng Liu, Tianpeng Wang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Lattice Boltzmann Modeling Of Dendritic Growth And Microstructure Evolution In Solidification Of Alloys, Dongke Sun, Qingyou Han, Mingfang Zhu Oct 2016

Lattice Boltzmann Modeling Of Dendritic Growth And Microstructure Evolution In Solidification Of Alloys, Dongke Sun, Qingyou Han, Mingfang Zhu

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Flow Stress And Microstructure Models Of Alloys, Lars-Erik Lindgren Oct 2016

Flow Stress And Microstructure Models Of Alloys, Lars-Erik Lindgren

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Numerical Simulation Of The Early Age Three-Dimensional Microstructure Development Of Cement Pastes, Yunsheng Zhang, Zhiyong Liu, Wei Sun Jul 2014

Numerical Simulation Of The Early Age Three-Dimensional Microstructure Development Of Cement Pastes, Yunsheng Zhang, Zhiyong Liu, Wei Sun

International Conference on Durability of Concrete Structures

The formation process of microstructure in cement pastes was first simulated with a numerical model CEMHYD3D. The influence of water-to-cement ratio and particles size on heat release and degree of hydration were then investigated. In addition, the mass of CH and C–S–H phases simulated have been verified by measuring values by thermogravimetry–differential scanning calorimetry (TG-DSC) and X-ray diffraction (XRD)-Rietveld analysis. The evolutions of solids phase percolation and capillary pores de-percolation were also identified by means of a three-dimensional (3D) numerical model. The results show that the simulated values are in good agreement with the available experimental data, indicating a good …


Set-Up Of Digital Image Correlation Apparatus, German A. Parada, Michael Sangid Oct 2013

Set-Up Of Digital Image Correlation Apparatus, German A. Parada, Michael Sangid

The Summer Undergraduate Research Fellowship (SURF) Symposium

Digital Image Correlation (DIC) is a valuable and customizable experimental technique employed to analyze localized strain regions on materials by tracking the displacement of points on the surface of the studied material under applied stress. To investigate materials behavior, it is vital to correctly set-up the DIC apparatus so work has been done to ready the equipment to start measurements on two distinct projects. On the first project, the fatigue crack behavior of a high-strength aluminum alloy will be studied by cyclic loading, testing necessary for the safe design of aircraft parts utilizing this novel alloy. DIC will be carried …