Rishi Chakrapani UIN: 331002779 MEEN 360 HW #2 Chapter 7, due 9/5/2023 through Canvas (due at 11:59 PM). 1.
(T/F) The following materials typically exhibit strength described by a Weibull distribution:
TRUE ceramics TRUE
glasses FALSE
metals FALSE
thermoplastic polymers above Tg 2.
Below are fractured surfaces of three different materials. Please label the three images as (1) brittle, intergranular fracture (2) brittle transgranular fracture, or (3) ductile fracture.
Transgranular Brittle Fracture Ductile Fracture Intergranular Brittle Fracture (Answers to #3, #4, and #5 are on the next few pages) 3.
A composite material has a plane-strain fracture toughness of 10 MPa m . Non-destructive testing has determined that the largest internal flaw has a full length of 150 μm.
a.
Assuming a geometric factor of f =
1.0 , as in Figure 7-1b of the textbook (reproduced on the next page), determine the stress at which fracture will occur.
