The stress variation in the area of the stress raiser
is shown in Fig.
The sharp corner on the casting is a stress raiser
that cracked on machining.
c) Reducing stress raisers
by eliminating contamination and preventing damage caused during mounting will minimise the risk of surface distress.
Minimize stress points by eliminating stress raisers
, kinks, mold seams, knit lines and other break points.
The cracks act as stress raisers
, causing stress concentration that inhibits the comprehensive deformation mechanisms in PC.
The resilient middle layer absorbs the bending force, reducing stress raisers
, which can break the outer layer, ensuring the anti-corrosion inner layer is well protected (Figure 5).
Solution Accuracy: Improved mesh quality around critical boundaries and stress raisers
with a new quadrilateral element meshing option.
If excessive needle-like inclusions are left, they can initiate cracks by serving as stress raisers
On medium volume batch production, this new process gives the cores a 2mm Ra (roughness average) finish that translates to an even finer surface inside the cast components: It is proving ideal for casting galleries in aluminium pistons of diesel engines, where a fault-free surface is needed to eliminate stress raisers
and a smooth precision shape is required for efficient oil flow.
are frequently a preferred site for fracture origin, particularly in fatigue.
With thinner casting walls, the smooth casting surface is necessary to eliminate stress raisers
in design should be avoided to reduce the possibility of fracturing.