High Temperature Tensile Testing with Digital Image Correlation
Mentor 1
William Musinski
Start Date
28-4-2023 12:00 AM
Description
The goal of this research project is to design a functioning high temperature tensile tester. Materials act differently at high temperatures. A preexisting tensile tester will be retrofitted to allow for high temperature testing. The tensile tester will be positioned horizontally, and the test area will be within a furnace capable of ~1400° C. The sample grips need to be designed to withstand this higher temperature without deforming. Digital image correlation (DIC) will be utilized to allow for a non-contact data acquisition method to record strain in the test sample. DIC is a process that uses a high-resolution camera to record the deformation of the sample over time. This project is in the design phase. The testing will be conducted in the future once the apparatus and supporting data acquisition hardware are fully constructed. Current efforts have been in researching previous methods of high temperature tensile testing as well as digital image correlation. Design considerations that need to be mitigated include issues that arise from high temperature heat haze, illumination intensity, and minimal deformation of the components inside the furnace during high temperature cycling. Heat haze will be mitigated by the use of fans blowing away the hot air between the sample and the camera. The glow in samples can be minimized via blue light illumination and appropriate camera filters. To protect the camera from high heat and the potential of foreign object damage, a quartz viewing window will be utilized. High temperature tensile testing will enable critical research advancements to meet future energy, defense, and transportation requirements.
High Temperature Tensile Testing with Digital Image Correlation
The goal of this research project is to design a functioning high temperature tensile tester. Materials act differently at high temperatures. A preexisting tensile tester will be retrofitted to allow for high temperature testing. The tensile tester will be positioned horizontally, and the test area will be within a furnace capable of ~1400° C. The sample grips need to be designed to withstand this higher temperature without deforming. Digital image correlation (DIC) will be utilized to allow for a non-contact data acquisition method to record strain in the test sample. DIC is a process that uses a high-resolution camera to record the deformation of the sample over time. This project is in the design phase. The testing will be conducted in the future once the apparatus and supporting data acquisition hardware are fully constructed. Current efforts have been in researching previous methods of high temperature tensile testing as well as digital image correlation. Design considerations that need to be mitigated include issues that arise from high temperature heat haze, illumination intensity, and minimal deformation of the components inside the furnace during high temperature cycling. Heat haze will be mitigated by the use of fans blowing away the hot air between the sample and the camera. The glow in samples can be minimized via blue light illumination and appropriate camera filters. To protect the camera from high heat and the potential of foreign object damage, a quartz viewing window will be utilized. High temperature tensile testing will enable critical research advancements to meet future energy, defense, and transportation requirements.
