Question

Liquid penetrant testing (LPT) is mainly used for detecting internal blow holes defects in the castings.

(a) True

(b) False

This question was addressed to me by my college director while I was bunking the class.

I want to ask this question from Inspection and Testing in section Inspection Testing in Foundries of Casting-Forming-Welding I

Answer 1

Right answer is (b) False

To explain: Liquid penetrant testing (LPT) is a non-destructive test method used for revealing discontinuities that are opened to the surface. The main reason for using penetrant inspection is for locating cracks, pores and other flaws which are opened to the surface being inspected.