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On the Accurate Strain Measurement in Split Hopkinson Tensile Bar Tests

Chen, Cheng / Qian, Xudong

The Split Hopkinson Tensile Bars (SHTB) are utilized to evaluate the dynamic material property under high strain rates. The one dimensional (1D) wave theory applies to determine the stress and strain of the test specimen. This study adopts the digital image correlation (DIC) technique to measure the full-field deformation along the specimen and compare the strain results with those collected from the strain gauges. The DIC-based strain results reveal nonhomogeneous specimen deformation under the dynamic conditions, and thus provide more accurate strain measurement to establish the stress-strain curve in the SHTB tests.

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On the Accurate Strain Measurement in Split Hopkinson Tensile Bar Tests

Chen, Cheng / Qian, Xudong

The Split Hopkinson Tensile Bars (SHTB) are utilized to evaluate the dynamic material property under high strain rates. The one dimensional (1D) wave theory applies to determine the stress and strain of the test specimen. This study adopts the digital image correlation (DIC) technique to measure the full-field deformation along the specimen and compare the strain results with those collected from the strain gauges. The DIC-based strain results reveal nonhomogeneous specimen deformation under the dynamic conditions, and thus provide more accurate strain measurement to establish the stress-strain curve in the SHTB tests.

On the Accurate Strain Measurement in Split Hopkinson Tensile Bar Tests

Chen, Cheng / Qian, Xudong

The Split Hopkinson Tensile Bars (SHTB) are utilized to evaluate the dynamic material property under high strain rates. The one dimensional (1D) wave theory applies to determine the stress and strain of the test specimen. This study adopts the digital image correlation (DIC) technique to measure the full-field deformation along the specimen and compare the strain results with those collected from the strain gauges. The DIC-based strain results reveal nonhomogeneous specimen deformation under the dynamic conditions, and thus provide more accurate strain measurement to establish the stress-strain curve in the SHTB tests.

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Title:

On the Accurate Strain Measurement in Split Hopkinson Tensile Bar Tests

Additional title:

Lecture Notes in Civil Engineering

Contributors:

Geng, Guoqing (editor) / Qian, Xudong (editor) / Poh, Leong Hien (editor) / Pang, Sze Dai (editor) / Chen, Cheng (author) / Qian, Xudong (author)

Published in:

Proceedings of The 17th East Asian-Pacific Conference on Structural Engineering and Construction, 2022 ; Chapter: 18 ; 215-222

Lecture Notes in Civil Engineering ; 302

Publication date:

2023-03-14

Size:

8 pages

ISBN:

978-981-19-7331-4 , 978-981-19-7330-7

ISSN:

2366-2565 , 2366-2557

DOI:

https://doi.org/10.1007/978-981-19-7331-4_18

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

SHTB , 1D wave , DIC , Strain measurement Engineering , Building Construction and Design , Structural Materials , Solid Mechanics , Sustainable Architecture/Green Buildings , Light Construction, Steel Construction, Timber Construction , Offshore Engineering

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