Question

A 4 Wheel drive vehicle had a rough ride through the think jungle of National Park and is suspected to have a hairline crack at one of its steel suspension spring. Recommend a suitable method and outline the steps to detect this crack line

Answer 1

- Dilan Vonk CC ca Steps Me theats of Delection v Magnetic Particle Testing Inspection W liquid Penetralon Inspection i) Eddy current testing. iliq Penzhalim Testany - Iubes capillary action ) Also known as color check method, Suryake iis coated with a liquid under Petetraking Force i) This liquid blows into the crack trapped in it after the penetration time (10 Excess penetrant is removed, and a developer is applied to penetrant from Haws, making indication visible ( 11 Magnetic Partizle Inspection = (MPI) and get draw Principle: Magnetize Steps: O Magretize the part under test di) Apply wet dry ferrous pcorticle di Due to magnetic flux leak, the ferrous particle are attracted to it & an indication

ii) Eddy Current Testing Pranciple: Electromagnetic Incluction Step- (i Current Introduct Cac curent into the copper coil, produces Electric field around it (10) The defect in the matemal disturbs the Eddy current path , creating a local magnetic field to quantify it