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Photoelastic stress of a knife and fork F008 / 2029
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Photoelastic stress of a knife and fork F008 / 2029
Coloured light interference pattern of a knife and fork. When photographed through cross-polarised white light some transparent plastics display coloured interference effects, according to the pattern of residual stress within the plastic (a result of moulding manufacturing). Areas of similar colour represent regions under similar degrees of stress. This phenomenon, known as photoelasticity, is utilised in engineering situations. Plastic models of bridges, gears, axles, etc may be made and subjected to proportional loads in order to predict the stress patterns that might occur in the real objects
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9305027
© PASIEKA/SCIENCE PHOTO LIBRARY
Cutlery Fork Interference Interference Pattern Knife Laboratory Plasticware Light Non Destructive Testing Photo Elastic Stress Photo Elasticity Photoelastic Photoelasticity Plastic Polarised Polarized Light Scientific Imaging Stress Stress Test Cutouts Laboratory
EDITORS COMMENTS
This print showcases the fascinating world of photoelastic stress. The image features a close-up view of a knife and fork, set against a black background. Through the use of cross-polarised white light, transparent plastics reveal an intricate coloured interference pattern that corresponds to the residual stress within the material. Manufactured through moulding processes, these plastic utensils exhibit areas of similar colours which indicate regions under comparable levels of stress. This phenomenon, known as photoelasticity, holds immense significance in engineering applications. Engineers can create plastic models resembling real objects like bridges, gears, or axles and subject them to proportional loads. By doing so, they can accurately predict potential stress patterns that may occur in those actual structures. The utilization of polarized light enables scientists to conduct non-destructive testing and gain valuable insights into the behavior of materials under different stresses. In laboratory settings like this one depicted in the photograph, researchers employ specialized equipment such as scientific imaging devices and lab-grade plasticware for precise measurements. Captured by PASIEKA/SCIENCE PHOTO LIBRARY with meticulous detail and precision, this image not only highlights the beauty found within scientific exploration but also serves as a reminder of how technology continues to push boundaries in understanding complex phenomena like photoelastic stress.
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