Report of Testing
Report of static and dynamic testing of suspension arms for Alfa Romeo 147/156/GT/GTA
See report of static and dynamic testing of suspension arms (PDF 304kb)
The original suspension arms of the car brand Alfa Romeo 156/147/GT/GTA shows deficiencies in the form of lack of rigidity during exploitation. Original arm was made of profiled sheet with rubber mounts at the ends.
In order to eliminate this deficiency, two new types of arms are constructed. These arms are made of stainless steel pipe on which ends are welded rubber mountings. The one of these is welded with additional material while the second one is welded without additional material, and that's the only difference between these two arms.
This report presents the results of the mechanical properties of the arms. All three types of arms are subjected to static tensile tests. Each experiment was repeated on three samples that means nine experiments are conducted. After the results confirmed the higher stiffness of newly constructed arm.
Suspension arm with the additional material is further subjected to dynamic testing. Parameters and a description of tests are given to each individual test.
The report includes the results of the mechanical characteristics of suspension arms of the car Alfa Romeo 156/147/GT/GTA. Static testing was conducted on the original arm and on the two types of new construction.
Static test results show that the arm, AR - with additional material shows superior properties in terms of breaking force and in terms of stiffness relative to the construction of a new AR - without additional materials also in relation to the original AR arm.
Dynamic testing was conducted only on the suspension arm AR - with additional material, which showed the best mechanical properties in static tests. The arm withstood 106 cycles after which the test is stopped. After test there is no visible damage on the sample.
