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Extracting Strain Rate Sensitivity of Metals from a Single Cantilever Under Bending

Goel, P and Kumar, P and Jayaram, V (2020) Extracting Strain Rate Sensitivity of Metals from a Single Cantilever Under Bending. In: 3rd Structural Integrity Conference and Exhibition, SICE, 11-13 December 2020, IIT Bombay, pp. 343-355.

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Official URL: https://doi.org/10.1007/978-981-16-8724-2_32


The accuracy and reliability of material parameters obtained through small scale testing are a challenge as testing is limited by the difficulty in sample preparation, its mounting, and alignment. Thus, there is great interest in the development of high throughput testing methodologies, to generate a large amount of data using fewer tests. In a cantilever, in addition to ease of gripping and alignment, the strain gradient along thickness (as well as length) enables the generation of a large volume of data from a single specimen, thereby improving accuracy and reliability. However, the non-linear stress-strain relationship in plasticity leads to redistribution of stress across the cantilever to maintain section planarity. The extraction of flow parameters using a cantilever relies upon the estimation of stress during the deformation. In the present work, a framework is developed to extract strain rate sensitivity from a single cantilever during a deflection rate-controlled test. This demonstrates the effectiveness of bending in reducing the number of tests required to obtain strain rate sensitivity. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

Item Type: Conference Paper
Publication: Lecture Notes in Mechanical Engineering
Publisher: Springer Science and Business Media Deutschland GmbH
Additional Information: The copyright for this article belongs to Springer Science and Business Media Deutschland GmbH
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 23 May 2022 06:04
Last Modified: 23 May 2022 06:04
URI: https://eprints.iisc.ac.in/id/eprint/71874

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