Content deleted Content added
Citation bot (talk | contribs) Alter: issue. Add: date, doi. Formatted dashes. | Use this bot. Report bugs. | Suggested by Abductive | #UCB_webform 111/3850 |
added diagram of CTOD |
||
Line 6:
where <math>\sigma_\text{ys}</math> is the [[Yield (engineering)|yield stress]], <math>a</math> is the crack length, <math>E</math> is the [[Young's modulus]] , and <math>\sigma^\infty</math> is the remote applied stress.
[[File:Crack tip opening displacement.svg|thumb|Diagram of crack tip opening displacement (CTOD)]]
Under [[fatigue (material)|fatigue]] loading, the range of movement of the crack tip during a loading cycle <math>\Delta\delta_\text{t}</math> can be used for determining the rate of fatigue growth using a [[crack growth equation]]. The crack extension for a cycle <math>da/dN</math>, is typically of the order of <math>\Delta\delta_\text{t}</math>.<ref name="suresh04" />
| |||