ed from an aluminum cture toughness of 26 nas been determineč Ess of 112 MPa (16,2- ernal crack length is ne component and all.

The engineering yield strength of an alloy is 80 ksi.

What is the fatigue strength of 2014-T6 Aluminum (MPa) at 1E5 life? Type your response

Specify a copper alloy that requires at least 50% elongation and at least 300 MPa tensile strength.

What is the maximum internal flaw size allowable for a 304 Stainless steel alloy that is loaded to a stress two thirds of its yield strength (205 MPa) and it has a fracture toughness of 95 MPa.m0.5. Assume a value of 1.3 for Y

Using the equation Kica, plot the fracture stress (MPa) for aluminum alloy 7075-T651 versus surface crack size a (mm) for a values from 0.2 mm to 2.0 mm. What is the minimum size surface crack that will cause catastrophic failure?

(a) A large medium carbon steel crane hook is thought to contain penny- shaped internal cracks. If the non-destructive test equipment used on the hook is not capable of detecting cracks smaller than 20 mm diameter, determine the fracture toughness required from this steel if the safety factor on stress is to be 2. The yield stress of the AISI 1045 grade steel is 1050 MNm². Note: For this crack geometry, the 'compliance function' Y in the Stress Intensity Factor (K)) may be taken as 1. (b) A surface crack of 2.5 mm depth and a certain length is found in a thick rectangularcomponent. The component is schedule to be repaired in 6 months. The component is subjected to zero to maximum stress of 340 MPa, 50 times per hour. It was known that for this component catastrophic failure occurs when the crack size reaches 12 mm in depth. Assuming that the crack geometrical shape (aspect ratio) remains constant during crack growth, will the component fail before repair? For the crack geometry, the…

M 1:-A O photo_2021-02-1.. -> 200 stress 150 (MPa) L00 50 0.1 0-2 strain From the tensile stress-strain behavior fer the brass specimen the foibuding:- O the diameter is 12-8 mm Calcalate 1- The Yield stress. 2- Modulus of elasticity. 3 - The Tensile strength . II

1. Glass and epoxy have stiffnesses of Eglass = 70 GPa and Eepoxy = 3.5 GPa and fracture toughness values of Kic-glass = KIC-epoxy = 1 MPa√m. a. Which has a higher toughness (GC)? b. What might the broken surfaces look like after failure, and how does that relate to the energy dissipated during fracture?