Transcription of Chapter 6: Mechanical Properties - Armstrong
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Chapter 6 -1 ISSUES TO Stressand strain: What are they and why arethey used instead of load and deformation? Elasticbehavior: When loads are small, how much deformation occurs? What materials deform least? Plasticbehavior: At what point does permanent deformation occur? What materials are most resistant to permanent deformation? Toughnessand ductility: What are they and howdo we measure them? Chapter 6: Mechanical Properties Chapter 6 -2 Elastic means reversible!Elastic Deformation2. Small loadFdbonds stretch1. Initial3. Unloadreturn to initialFdLinear-elasticNon-Linear-elasti cChapter 6 -3 Plastic means permanent!
Mechanical Properties . Chapter 6 - 2 Elastic means reversible! Elastic Deformation 2. Small load F d bonds stretch 1. Initial 3. Unload return to initial F d Linear-elastic Non-Linear-elastic. Chapter 6 - 3 Plastic means permanent! Plastic Deformation (Metals) F d linear elastic elastic dplastic 1. Initial 2. Small load 3. Unload
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