TY - JOUR
T1 - Development of Miniature Tensile-Test System of Intermediate Strain Rate Based on Electromagnetic Launch
AU - Cai, Su
AU - Zhang, Chitao
AU - Liu, Zhanwei
AU - Wang, Xiaoming
N1 - Publisher Copyright:
© 2023 American Society of Civil Engineers.
PY - 2023/11/1
Y1 - 2023/11/1
N2 - To study the dynamic properties of intermediate strain rates for filiform or filmy materials, a miniature tensile-test system with an intermediate strain rate based on magnetic resistance actuation is designed herein. The loading part of the system is formed by inertial movement and an electromagnetic launcher, and the testing part is formed by high-speed optical noncontact measurements using a microforce sensor. Constant tension and intermediate speed are realized by designing the inertial motion of a large-mass combined accelerator. Friction and vibration are offset using magnetic attraction. The electromagnetic acceleration force was eliminated by adjusting the length differences, construction, and relative motion of the structures. The stress-strain curves are obtained by synchronizing the strain signal measured using the optical extensometer method and the stress signal measured using the microforce sensor. The system is verified to be miniature, stable, easy to control, accurate for strain rate, economic, and used for small samples. The stability and reliability of the system are verified using speed testing and motion-state photography. Therefore, the designed system is miniature, easy to control, highly cost-effective, and can be used for filiform or filmy samples.
AB - To study the dynamic properties of intermediate strain rates for filiform or filmy materials, a miniature tensile-test system with an intermediate strain rate based on magnetic resistance actuation is designed herein. The loading part of the system is formed by inertial movement and an electromagnetic launcher, and the testing part is formed by high-speed optical noncontact measurements using a microforce sensor. Constant tension and intermediate speed are realized by designing the inertial motion of a large-mass combined accelerator. Friction and vibration are offset using magnetic attraction. The electromagnetic acceleration force was eliminated by adjusting the length differences, construction, and relative motion of the structures. The stress-strain curves are obtained by synchronizing the strain signal measured using the optical extensometer method and the stress signal measured using the microforce sensor. The system is verified to be miniature, stable, easy to control, accurate for strain rate, economic, and used for small samples. The stability and reliability of the system are verified using speed testing and motion-state photography. Therefore, the designed system is miniature, easy to control, highly cost-effective, and can be used for filiform or filmy samples.
KW - Inertial movement
KW - Intermediate strain rate
KW - Magnetic resistance actuating
KW - Miniature
UR - http://www.scopus.com/inward/record.url?scp=85172198657&partnerID=8YFLogxK
U2 - 10.1061/JENMDT.EMENG-7172
DO - 10.1061/JENMDT.EMENG-7172
M3 - Article
AN - SCOPUS:85172198657
SN - 0733-9399
VL - 149
JO - Journal of Engineering Mechanics - ASCE
JF - Journal of Engineering Mechanics - ASCE
IS - 11
M1 - 04023093
ER -