北京化工大学：《材料导论》课程教学资源（课件讲稿）Module3 Properties and Characterization of Materials

Introduction to Materials Module 3 Properties and Characterization of Materials PDF文件使用"pdfFactory Pro'”试用版本创建m,fineprint.com,cn

Introduction to Materials Module 3 Properties and Characterization of Materials PDF 文件使用 "pdfFactory Pro" 试用版本创建 êwww.fineprint.com.cn

3.1 Properties and Environmental Varables Materials properties Chemical properties Physical properties Mechanical properties Composition Melting point Tensile properties Corrosion resistance Thermal properties Compressive properties Microstructure Electrical properties Toughness Phase structure Magnetic properties Creep Crystal structure Optical properties Hardness Fire retardance Color Dynamic mechanical properties PDF文件使用"pdfFactory Pro”试用版本创建w,fineprint..com,cn

Fire retardance Crystal structure Phase structure Microstructure Corrosion resistance Composition Chemical properties Color Optical properties Magnetic properties Electrical properties Thermal properties Melting point Physical properties Dynamic mechanical properties Hardness Creep Toughness Compressive properties Tensile properties Mechanical properties Materials properties 3.1 Properties and Environmental Varables PDF 文件使用 "pdfFactory Pro" 试用版本创建 ÿÿwww.fineprint.com.cn

3.2 Mechnical properties 3.2.1 Tensile properties Standard tensile test specimen (b) PDF文件使用"pdfFactory Pro'”试用版本创建m,fineprint.com,cn

3.2 Mechnical properties 3.2.1 Tensile properties (a) (b) Standard tensile test specimen PDF 文件使用 "pdfFactory Pro" 试用版本创建 êwww.fineprint.com.cn

Ultimate strength Yield point Elastic region Fracture SSauS Plastic region △6 E △e Strain (8)mm/mm PDF文件使用"pdfFactory Pro”试用版本创建ww,fineprint..com,cn

Yield point Ultimate strength Fracture Elastic region Plastic region S t r e s s ( s ) M P a Strain (e) mm/mm X Δe Δs E= PDF 文件使用 "pdfFactory Pro" 试用版本创建 êwww.fineprint.com.cn

A typical stress-strain curve for polymeric materials (a) (b) Strain PDF文件使用"pdfFactory Pro”试用版本创建ww,fineprint.com.cn

A typical stress-strain curve for polymeric materials (b) (c) (d) S t r e s s S t r e s s Strain (a) PDF 文件使用 "pdfFactory Pro" 试用版本创建 êwww.fineprint.com.cn

B (edW) (edW) s (m/m) s (m/m) A:Low carbon steel B:Medium carbon steel C:Plaster of paris D:Tungsten carbide E:Grey cast iron (in compression) F:Grey cast iron (in tension) PDF文件使用"pdfFactory Pro”试用版本创建w,fineprint..com,cn

A: Low carbon steel B: Medium carbon steel C: Plaster of paris D: Tungsten carbide E: Grey cast iron (in compression) F: Grey cast iron (in tension) B A C D E F s ( M P a ) e (m/m) s ( M P a ) e (m/m) PDF 文件使用 "pdfFactory Pro" 试用版本创建 êwww.fineprint.com.cn ê

Determination of offset yield strength CPonder 69 intersection point Offset line 1 0.002 0.010 PDF文件使用"pdfFactory Pro'”试用版本创建继粒fineprint.com,cn

s ( M P a ) Offset line 0.002 0.010 sy Ponder Determination of offset yield strength intersection point e PDF 文件使用 "pdfFactory Pro" 试用版本创建 ê昳ÿ www.fineprint.com.cn

Ductility elongation= -x100 RA reduction in area= A-A2×100 A PDF文件使用"pdfFactory Pro”试用版本创建ww,fineprint..com,cn

% elongation＝ % RA reduction in area＝ 100 0 0 ´ - l l l f 100 0 0 ´ - A A A f Ductility PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.com.cn

F Engineering stress: Engineering strain: 1-1 e True stress: True strain: PDF文件使用"pdfFactory Pro'”试用版本创建um,fineprint.com,cn

Engineering stress： Engineering strain： True stress： True strain： A 0 F s = 0 0 l l - l e = A F s t = ò = = A A l l l dl 0 0 ln ln PDF 文件使用 "pdfFactory Pro" 试用版本创建 ÿwww.fineprint.com.cn

True stress-strain carve SS3IS Engineering stress-strain curve curve engineering stress-strain strain curve with comparison of true stress- ponder Strain PDF文件使用"pdfFactory Pro”试用版本创建w,fineprint.com.c迎

c o m p a r i s o n o f c o m p a r i s o n o f t r u e s t r e s s s t r e s s - s t r a i n c u r v e w i t h s t r a i n c u r v e w i t h e n g i n e e r i n g s t r e s s e n g i n e e r i n g s t r e s s - s t r a i n s t r a i n c u r v S e t r e s s Strain True stress-strain curve Engineering stress-strain curve ponder PDF 文件使用 "pdfFactory Pro" 试用版本创建 êwww.fineprint.com.cn ÿ