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Title: Compressive split Hopkinson pressure bar to determine high strain rate properties of material
Authors: Tan, Andy Chun Chiang
Keywords: Engineering::Mechanical engineering
Issue Date: 2019
Abstract: Static mechanical properties such as yield strength and hardness are readily available from many different sources. However, strain rate dependant data are not always included in them. This is because quasi-static and high strain rate conditions do not typically have a standard approach in measurement, hence its properties cannot be easily obtained. Such data, however, are important for dynamic loadings of materials in high risk industry, such as aerospace and automobile. The Split Hopkinson Pressure Bar (SHPB), commonly known as Kolsky bar, is a tool for high strain rate testing. It is suitable for materials deformation of high strain rate testing ranging from 102 to 104 s-1. Three methods that are widely tested using the SHPB are; Tension, Torsion and Compression. However, this report will only document reports and findings from the compression mode. Calibrations of the experiment setup was to ensure straightness in setup bars and necessary measurements to ensure specimen tolerances were met, these factors are essential to achieve experimental success. Dry runs (without specimen) were conducted in order to obtain the necessary data required for the actual tests (with specimens). A series of tests, including empty runs, calibration runs and striker bar velocity test were done for aluminium alloy, Al 6061-T6. These data will then be compared with past research and literature and will be used throughout the experiment for consistency.
Schools: School of Mechanical and Aerospace Engineering 
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:MAE Student Reports (FYP/IA/PA/PI)

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