Rotating Bending Fatigue Testing Machine

Moore rotary fatigue testing machines located in the mechanical testing laboratory.

Rotating bending fatigue testing machine.

The purpose of the rotating bar bending fatigue test as per din 50113 1982 and iso 1143 2010 is to determine the bending fatigue strength properties of round specimens under rotating load. During determination of bending fatigue strength the specimen is subjected exclusively to alternating loading in order to obtain a mean value of zero. The specimen functions as a simple beam symmetrically loaded at two points. This test reproduces a load condition to which the wheel is subject to when in use.

The advanced materials research laboratory amrl is home to three r r. Rotating beam fatigue testers are one of the oldest methods used to determine a material s fatigue behavior. Rotary bending fatigue testing. To perform a test with admet s rotating beam tester a sample is placed in the machine and a force is applied via a bending moment using weights hung off the sample.

When using high strength materials it is very important to consider not only the fatigue strength but also the presence of surface defects when determining the fatigue life of components. To provide full scale testing of the fatigue performance of our products apollo designed built and commissioned the world s first large scale rotating bending fatigue tester. Oem manufacturer of fatigue testing machine dynamic fatigue testing for springs computerised rotating bending fatigue testing machine fatigue testing machine for bridge bearing pads offered by tec sol india original manufacturer software for advanced material testing machines calibration chennai tamil nadu. In particular during this test the main stresses are developed in the central part.

Nicknamed the rotatamatron 3000 the machine is capable of applying a constant stress across a 2 75 in 70 mm diameter reduced section with a maximum load of 50 000 lbs. The machine design is based on the rotating beam principle. But we can perform fatigue tests for various shapes of specimens if we use the rotating bending fatigue testing machine here explained. The rotating bending test is a fatigue test that allows to evaluate the resistance of the wheel exploiting a rotating bending moment obtained through a rotating unbalanced mass.

This paper presents the design and development of a fast rotating bending test machine f or high cycle fatigue tests which can rotate up to 18 000 rpm generating cyclic s tresses at 300 hz.