ENGR-45_Lec-30A_Final_Exam-Review.pptl.ppt 1 Bruce Mayer, PE Engineering-45: Materials of Engineering Bruce Mayer, PE Licensed Electrical & Mechanical Engineer Engineering 45 Final Exam Review

ENGR-45_Lec-30A_Final_Exam-Review.pptl.ppt 2 Bruce Mayer, PE Engineering-45: Materials of Engineering P13.14 Advice  The Following Problem is Very SIMILAR to Problem 13.14, but it is NOT the Same  The Numbers were Changed to Protect the Innocent

ENGR-45_Lec-30A_Final_Exam-Review.pptl.ppt 3 Bruce Mayer, PE Engineering-45: Materials of Engineering Problem SetUp  Problem →  SodaLime Glass (SLG) Loaded as Shown at Right  Find Using Fig 13.7 the Max- Temperature if the allowed extension is 1mm over the course of a week’s time 1N SLG 100 mm 5 mm

ENGR-45_Lec-30A_Final_Exam-Review.pptl.ppt 4 Bruce Mayer, PE Engineering-45: Materials of Engineering Use the η – ε – σ Reln  The Viscosity Reln  Where η ≡ Viscosity σ ≡ Tensile Stress ε ≡ Tensile Strain

ENGR-45_Lec-30A_Final_Exam-Review.pptl.ppt 5 Bruce Mayer, PE Engineering-45: Materials of Engineering

ENGR-45_Lec-30A_Final_Exam-Review.pptl.ppt 6 Bruce Mayer, PE Engineering-45: Materials of Engineering Use Fig °C  Thus at η = 3.08x1012 PaS: T = 490 °C

ENGR-45_Lec-30A_Final_Exam-Review.pptl.ppt 7 Bruce Mayer, PE Engineering-45: Materials of Engineering P14.25 Advice  The Follow Problem is Very SIMILAR to Problem 14.25, but it is NOT the Same  The Numbers were Changed to Protect the Innocent

ENGR-45_Lec-30A_Final_Exam-Review.pptl.ppt 8 Bruce Mayer, PE Engineering-45: Materials of Engineering

ENGR-45_Lec-30A_Final_Exam-Review.pptl.ppt 9 Bruce Mayer, PE Engineering-45: Materials of Engineering

ENGR-45_Lec-30A_Final_Exam-Review.pptl.ppt 10 Bruce Mayer, PE Engineering-45: Materials of Engineering