Answer to Question #196145 in Electrical Engineering for fgh

Question

Task P6 Part 2 – Brittle Failure 

1. Write a brief definition of brittle failure  
2. Describe the characteristics of brittle failure (e.g. failure surfaces, change in shape) 

You must include diagrams and/or photographs 

3.Describe the two types of brittle fracture  

You must include diagrams and/or photographs 

4.Describe an example of a metal component or structure that has failed in a brittle manner. 

You must include diagrams and/or photographs 

Answer 1

1. A ductile failure occurs when a malleable material is subjected to significant plastic deformation or necking. This generally happens before the material fails completely. The failure of extremely ductile materials is referred to as ductile rupture.
2. In the area of ductile fracture, there is significant substantial permanent or plastic deformation.In contrast to brittle fractures, the surface of a ductile fracture is not always connected to the direction of the major tensile stress.
3. Based on the Widgery and Knott model, which states that microvoids connect with a propagating crack if they lay within a specified contact distance of its plane, a stereological analysis for ductile fracture by microvoid coalescence is described.Using projected image connections for a thin slab, a three-dimensional analytical equation for dimple density and form is constructed from this model. Numerical integration of the Rice-Tracey growth equation across the relevant strain range is used to integrate void nucleation and growth into the study.Using tensile data from a spheroidized 1045 steelmore» to anticipate the influence of hydrostatic pressure on the dimple density, the stereological technique is evaluated.The approach is demonstrated to offer an estimate of dimple size and microroughness parameter utilized in local stain models for microvoid coalescence, which is compatible with documented correlations between dimple density and second phase particle density.

4

A wire can be formed from a ductile materials. Most metals, including gold, silver, copper, erbium, terbium, and samarium, are good examples of ductile materials. Tungsten and high-carbon steel are two metals that aren't extremely ductile.