Effect analysis of an arc-strike-induced defect on the failure of a post-tensioned threadbar

2016-09-06_15h41_49

An article about a case study published in « Case Studies in Engineering Failure Analysis » – april 2016.

A temporary threadbar used for precast segmental construction broke during the post-tensioning stage before reaching the service load. Failure analysis showed that the premature failure of the bar was due to the presence of an arc strike. The arc strike effects on the material and threadbar integrity are considered.

Read more

Fracture mechanisms of failed IN-738LC gas turbine blades

An interesting  paper in « Case study in Engineering Failure Analysis » published on ScienceDirect.com. This paper outlines the problem of blades failure occurred because of excessive temperature exposure. Nickel based superalloys are widely used as gas turbine blade material. They suffer from microstructural instabilities and environmental damages. Creep properties of alloy was deteriorated by γ‘ particles dissolution.

Acceder article