A Concept of Multiple Stress Testing Machine
EOI: 10.11242/viva-tech.01.08.071
Download Full Text here
Citation
Omkar Joshi,Sairaj Shetye, Soham Agaskar , Sahil Patil, " A Concept of Multiple Stress Testing Machine ", VIVA-IJRI Volume 1, Issue 8, Article 1, pp. 1-7, 2025. Published by Computer Engineering Department, VIVA Institute of Technology, Virar, India.
Abstract
Multiple Stress testing is crucial in material science, enabling evaluation of material durability under cyclic loads. Conventional machines are specialized for specific stress types like rotary bending, axial, or torsional stress, leading to high costs and inefficiencies for small and medium-sized manufacturers requiring multiple testing modes. This project addresses these challenges by developing an integrated multiple stress testing machine capable of performing rotary bending, axial, and torsional stress tests in a single setup. For axial testing, a pneumatic cylinder applies alternating tensile and compressive loads to a fixed specimen, with precise load control to ensure tests exceed fatigue limits. An encoder counts linear movements to record data over specific cycles, plotting load against fatigue life. For rotary bending and torsional tests, the tri-stress testing machine uses a dual chuck system, allowing smooth rotation via bearings. Weights induce bending stresses as a motor rotates the specimen, with a tachometer monitoring revolutions until failure. Torsional stress is applied by twisting one end while the other remains fixed, following a similar testing approach. The project includes design sketches, material selection, load and stress calculations, and an AutoCAD model to guide fabrication. The tri-stress testing machine aims to enhance efficiency, reduce costs, and support material evaluation across industries, contributing to advancements in product reliability.
Keywords
- Multiple Stress, Fatigue, shear, axial. Torsional.
References
- M. R. Schmidt and M. Müller, “Overview of innovations in fatigue testing methodologies and technologies emphasizing automation and data analysis improvements,” 2021.
- K. M. Asif, M. M. Ghori, M. I. Khatib, and M. Sadiq, “Explores fatigue testing methodology for materials under fluctuating loads, improving understanding of fatigue strength and failure mechanisms,” 2020.
- L. Yang, M. Hu, and D. Zhao, “Proposes method for evaluating fatigue reliability of vehicle wheels under multiaxial loading, enhancing performance and safety in automotive design,” 2020.
- G. Rissa, F. Zemzem, S. Manchoul, et al., “Predictive approach of high-cycle fatigue limit of finished turned AISI 316L steel,” Experimental and Statistical Modeling for Fatigue Limit Estimation,” 2019
- M. Ranjbar, H. Bakhshandeh, and H. Khedmatgar, “New methodology for composite material fatigue testing replicating real-world loading scenarios and analyzing fatigue life factors,” 2018.
- Y. Wang, W. Zhou, and X. Liu, “Investigates multi-axial fatigue behavior of high-strength steels, developing a predictive model for fatigue life assessment,” 2017.
- R. K. Sahu and V. Kumar, “Details the design and performance evaluation of a hydraulic fatigue testing machine for cyclic load testing,” 2016.
- H. Vispute, A. Kamane, V. Patil, S. Shaha, and S. Katkar, “Investigates fatigue behavior of coiled and compression springs, determining endurance limits to enhance product reliability and manufacturing processes,” 2015.
- W. Gao, C. Zhang, and Q. Li, “Examines fatigue properties of 3D printed polymers, focusing on printing parameters' effects on fatigue life,” 2015.
- V. Chaves, C. Madrigal, and A. Navarro, “Examines fatigue behavior of AISI 304L stainless steel under biaxial loading, revealing insights into crack initiation and propagation,” 2014.
- J. G. Castillo Alva, E. C. Mejia Sanchez, M. A. Meggiolaro, and J. T. Pinho de Castro, “Designs pneumatic fatigue testing machine for cyclic loading, emphasizing portability and performance across different material types,” 2013.