Type of inspection: 

Test­ing of wall thick­ness­es of an exhaust manifold.

Chal­lenge:

The exhaust man­i­fold is one of the most heav­i­ly loaded com­po­nents of an engine. For this rea­son, the actu­al and desired con­di­tion of the wall thick­ness should be com­pared. Only with a suf­fi­cient wall thick­ness can the man­i­fold with­stand the shock-like inflow of exhaust gas­es and the result­ing pres­sure front, as well as the many heat­ing and cool­ing cycles in the long term. 

Pos­si­ble con­se­quences of unde­tect­ed deviations:

The notch effect of blow­holes can cause a crack in the man­i­fold. Par­tial break­throughs can also occur if the wall thick­ness is too small. This leads to a change in the pres­sure con­di­tions in the man­i­fold, which reduces engine per­for­mance and, at the same time, increas­es fuel con­sump­tion. In addi­tion, there is a high noise lev­el from the direc­tion of the engine and a clear­ly per­cep­ti­ble exhaust smell in the interior.

Advan­tages of a CT inspection:

• Fast and auto­mat­ic detec­tion of rel­e­vant qual­i­ty defects 
• Avoid­ance of scrap refinement 
• Detec­tion of defect focal points through sta­tis­ti­cal eval­u­a­tion of the results.