Determination of strain rate dependent through-thickness tensile properties of textile reinforced thermoplastic composites using L-shaped beam specimens

2011 ◽  
Vol 71 (8) ◽  
pp. 1110-1116 ◽  
Author(s):  
W. Hufenbach ◽  
A. Hornig ◽  
B. Zhou ◽  
A. Langkamp ◽  
M. Gude
Keyword(s):  
Strain Rate ◽  
Tensile Properties ◽  
Thermoplastic Composites ◽  
Shaped Beam ◽  
Rate Dependent

Determination of Strain Rate Depended Stress and Strain Fields in PVD Coatings on Cemented Carbide Inserts during the Repetitive Impact Test

2020 ◽  
Vol 404 ◽  
pp. 45-52
Author(s):  
Antonios Bouzakis ◽  
Georgios Skordaris ◽  
Konstantinos Dionysios Bouzakis ◽  
Mehmet Gökhan Gökcen ◽  
Apostolos Boumpakis ◽  
...  
Keyword(s):  
Strain Rate ◽  
Cemented Carbide ◽  
Stress And Strain ◽  
Strain Fields ◽  
Rate Dependent ◽  
Impact Forces ◽  
Repetitive Impact ◽  
Carbide Inserts ◽  
Fatigue Endurance

Recently, stress, strain, strain-rate dependent curves for cemented carbide have become an established tool for evaluating the mechanical properties. In this paper, related strain-rate dependent data of a K05 insert were employed to define the developed stress and strain fields occurring in the compound coating-substrate at impact forces of various durations. In this way, the occurring maximum strains at various impact loads and times were analytically calculated. These maximum values and related fatigue endurance coating strain-rate dependent limits were consequently used to validate published coating fatigue critical impact forces associated with certain impact times.

Experimental Study on Rate-Dependent of the Bending Tensile Properties for Steel Fiber Reinforced Concrete

2011 ◽  
Vol 71-78 ◽  
pp. 1083-1089
Author(s):  
Zhang Luo
Keyword(s):  
Reinforced Concrete ◽  
Flexural Strength ◽  
Strain Rate ◽  
Tensile Properties ◽  
Steel Fiber ◽  
Fiber Reinforced Concrete ◽  
Test Machine ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete ◽  
Rate Dependent

Extensive experimental research has been done on rate-dependent properties normal concrete, but very little on the tensile properties of steel fiber reinforced concrete (SFRC). In this article, based on a high-speed Instron servo-controlled hydraulic materials test machine is adopted to investigate the strain rate-dependent properties of bending tensile properties for SFRC. The scheme of experiment, the works of specimens fabricating and the processes of both loading and measuring were introduced. A total of 30 beam specimens are tested. The steel fiber content is varied: 0%, 1.0%, 2.0%, 3.0% and 4.0% by volume. The experimental results were analyzed. The emphasis is put on the study of the flexural strength changes of SFRC under different strain rates. It is discovered that, with the improvement of the strain rate, increasing strength of SFRC is very obvious. While the strain rate increases from 1.4×10-4s-1 to 0.53×10-4s-1, the flexural strength increasing around 30%.

Velocity of Torsional Waves in Metals Stressed Statically into the Plastic Range

1968 ◽  
Vol 10 (2) ◽  
pp. 153-164 ◽  
Author(s):  
E. Convery ◽  
H. LI. D. Pugh
Keyword(s):  
Strain Rate ◽  
Strain Curve ◽  
Plastic Range ◽  
Stress Strain Curve ◽  
Rate Dependent ◽  
Torsional Waves ◽  
Dependent Theory ◽  
Velocity Of Propagation ◽  
Elastic Shear

This paper is concerned with the determination of the velocity of propagation of torsional plastic waves in metals stressed statically into the plastic range. A new method was developed in which a tubular test specimen together with a concentric bar of a brittle material was twisted slowly such that when the specimen was stressed beyond its yield the brittle bar broke suddenly and transmitted a plastic torsional stress increment along the specimen. It was found that the velocity of propagation both in copper and mild steel was the same as the elastic shear wave velocity. Although consistent with the strain-rate dependent theory, the result can be explained in terms of the strain-rate independent theory provided the stress-strain curve for the appropiate strain rate is used.

Strain rate-dependent tensile properties and dynamic electromechanical response of carbon nanotube fibers

Carbon ◽  
2012 ◽  
Vol 50 (10) ◽  
pp. 3876-3881 ◽  
Author(s):  
Amanda S. Wu ◽  
Xu Nie ◽  
Matthew C. Hudspeth ◽  
Weinong W. Chen ◽  
Tsu-Wei Chou ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Strain Rate ◽  
Tensile Properties ◽  
Rate Dependent ◽  
Carbon Nanotube Fibers

DETERMINATION OF THE BEHAVIOR OF 6063 ALUMINUM IN THE FRICTION WELDING PROCESS USING MATHEMATICAL MODELS

2012 ◽  
Vol 1381 ◽  
Author(s):  
F. García ◽  
P. del C. Zambrano Robledo ◽  
M.P. Guerrero ◽  
F. García-Vazquez
Keyword(s):  
Mechanical Strength ◽  
Mathematical Models ◽  
Strain Rate ◽  
Friction Welding ◽  
Welded Joint ◽  
Welding Process ◽  
Plastic Model ◽  
Rate Dependent ◽  
Ideal Process

AbstractIn this work, it was used a Johnson-Cook elastic-plastic model to represent the behavior in the friction welding process of 6063 aluminum. Temperature and strain rate dependent laws were used to determine the behavior of the material. The results determined that the amount of heat transferred into the material dictates the quality and the microstructure of the welding and the mechanical strength of the welded joint in an ideal process.

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