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Completed_Module_08_-_Mechanical_Propert23

Completed_Module_08_-_Mechanical_Propert23 - Lecture Module...

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Unformatted text preview: Lecture Module 8 - Mechanical Properties F. Fatigue - refers to material failure after repeated cycles of loading at stress levels . below the tensile stress (typical characteristic of metals) 1,000 regicw whit-t Lenka-H OCCIA'S I Fatigue strength . or endurance limit Applied stressS (MPa) ‘6‘ O 1 1o 102 103 104 105 106 107 108 Number of cycles to failure, N 0 Curve skews at ream/t cl: ciao/mars»: (I'mmjfl. air-H— incmmsimj it 64‘. (gel—CI. 90m MaJcV/‘OJS (9.3. 4km wens) Show an ”€444“an (MAP/s“ 4.14m. 4,6143% S‘lLr-an 7‘": Where j . S‘iI‘an‘Hx 5.5 (Maxim-LA (Adi-Ho IMCNAS'WLS ti— me (8C’93-1 G. Static Fatigue (occurs in silicate glasses & ceramics) . occurs M 1420 cowioiminf) {vii/Cranmwix. .\ / . OCCuv; 5.4 or rum!” f‘oam Jom‘oem-Lune 3r A20 fCaC'LS WI+H 3:02 4g {0(4th ‘Hv crack tensiln “A 0 Crack growth by chemical breaking of I H 7,0 /O’V oxide network 1 0/ O \ ’1. o"’ . / \ 0H» ”0 I 0 0 ” 2 8-23 j ...
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