Question 04 A polystyrene component must not fail when a tensile load of 1.25 MPa is applied. Determine the Fracture toughness of the polystyrene component and maximum allowable surface crack length if the surface energy of polystyrene is 0.50 J/m². Assume a modulus of elasticity of 3.0 GPa.

Question 04 A polystyrene component must not fail when a tensile load of 1.25 MPa is applied. Determine the Fracture toughness of the polystyrene component and maximum allowable surface crack length if the surface energy of polystyrene is 0.50 J/m². Assume a modulus of elasticity of 3.0 GPa.

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter11: Fracture And Fatigue

Section: Chapter Questions

Problem 11.4P

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Types and properties of steel

Steel is an alloy of iron. It is formed by heating iron and combining carbon (0.1-1.7%) with it and minor amounts of other elements such sulfur, chromium, manganese, nickel, etc. Thousands of steel grades have been published, registered, or regulated around the world, each with its chemical composition, and special numbering systems have been devised in various countries to classify the vast number of alloys.

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