An alloy that has a plane strain fracture toughness of 45 MPaLaTeX: \sqrt{m}m is used to fabricate a structural component. Experiments revealed that this component fails at a stress of 300 MPa when the maximum length of a surface crack is 0.95 mm. For the same component, find the maximum allowable surface crack length (in mm) without fracture if it is exposed to a stress of 300 MPa and made from another alloy with a plane-strain fracture toughness of 57.7 MPaLaTeX: \sqrt{m}m

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

The filament of an incandescent lamp has a temperature of 2000k. calculate the fraction of radiation emitted in the visible light band if the filament is approximated as blackbody

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k