HOW TO ETCH FOR MICROSTRUCTURE EVALUATION N METALLURGICAL TESTING LABORATORY

Mechanical testing or engineering tests are performed to determine various mechanical properties of materials such as strength, hardness, ductility, toughness, brittleness, etc. The precision results of these tests is utilised to determine suitability of materials for the field application. ...
charpy or impact testing is widely used to measure the toughness and ductility of the weld metal, base metal. Tensile testing of welds in place, with weld metal, HAZ, and base metal, allows an overall strength to be determined but usually cannot provide the strengths of the individual parts of the weldment.
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Calcul sur la résistance à la traction, de la force maximum UTS, la limite élastique, du pourcentage: https://youtu.be/Y55wdaHazto
Essai de la résistance au choc, résilience, Charpy (Mécanique, Physique) Résistance des matériaux:
https://youtu.be/NHy-hqUU07U
Tensile test sample's machinig on Lath (Preparation d'une eprouvette d'essai de tension au tour universel), mechanical and metallurgical testing sample:https://youtu.be/svBolCi9omo
Impact test at Low temperature, using CO2: https://youtu.be/F26jAhDM8ug
Impact sample machining: https://youtu.be/zExVOyJETk0
Impact, Toughness Calculation: https://youtu.be/QK1LTk-3ZR0
Impact, Toughness Quick Explanation: https://youtu.be/QK1LTk-3ZR0
Principle of Impact testing machine: https://youtu.be/-PTOJQ2Oq0I
Charpy Test at -196 °C (-196 degree Celsius using Liquid Nitrogen: https://youtu.be/lamyCtAlLZY
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Tensile test: Sample preparation: https://youtu.be/svBolCi9omoWelder Qualification Record, WPQR, WPS, WQR, PQR, In 13 Minutes
This video intends to give an idea of tests that a welder goes through in order to be part of a specific welding project ...and it also gives the basics explanations of PQR, WQR, WPS...
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