Photoelastic stress of toothbrush F008 / 2030

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Photoelastic stress of toothbrush F008 / 2030

Coloured light interference pattern of a toothbrush. 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 9308559

© PASIEKA/SCIENCE PHOTO LIBRARY

Interference Interference Pattern Laboratory Plasticware Light Non Destructive Testing Photo Elastic Stress Photo Elasticity Photoelastic Photoelasticity Plastic Polarised Polarized Light Scientific Imaging Stress Stress Test Toothbrush Cutouts Laboratory

EDITORS COMMENTS
This print showcases the intricate and mesmerizing world of photoelastic stress. The image features a toothbrush, model F008 / 2030, revealing a stunning coloured light interference pattern when photographed through cross-polarized white light. Transparent plastics possess the unique ability to display these vibrant interference effects, which correspond to the residual stress patterns within the plastic material resulting from its manufacturing process. The areas of similar colour in this photograph represent regions experiencing comparable levels of stress. This fascinating phenomenon, known as photoelasticity, finds valuable applications in engineering scenarios. Engineers can create plastic models resembling bridges, gears, axles, and more to subject them to proportional loads. By doing so, they gain insights into predicting potential stress patterns that may arise in real-world objects. Set against a striking black background with meticulous attention given to close-up details, this image captures the essence of technology-driven research conducted within laboratory settings. The use of polarized light enhances our understanding of how materials respond under different stresses without causing any damage—a technique known as non-destructive testing. With its scientific imaging prowess and emphasis on precision-cutout aesthetics combined with state-of-the-art equipment such as laboratory plasticware and polarized lighting techniques—this visually arresting photograph by PASIEKA/SCIENCE PHOTO LIBRARY offers an intriguing glimpse into the realm of photo elasticity and its invaluable role in advancing engineering knowledge.

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