Destructive Examination (DE)
of Steel Wire Ropes
Rope Tensile Testing
TestSafe Australia has an extensive history in the destructive testing of wire ropes. These destructive tests are generally carried out regularly to allow users to monitor the condition of the wire rope by comparing the results obtained with the original (new rope) test results for the wire ropes and examining the progressive deterioration of the wire rope overtime.
The technique consists of tensile ultimate load testing of a sample cut from the wire rope in service. For this reason, only certain applications of the use of wire ropes are suitable for destructive testing, as the usage must allow for cutting of samples from the wire rope periodically for testing.
TestSafe Australian conducts these tests for all types of wire ropes up to 56mm diameter, and a maximum breaking force of 2,800 kN. Prior to testing, the wire ropes are carefully prepared. For wire ropes up to 25mm diameter, the wire ropes can be either grip tested or capped. For wire ropes over 25mm diameter, capping is only used.
Capping consists of unwinding and 'splaying' of all wires in the wire rope at each end of the sample, multiple stages of cleaning of the wires, and then casting of a special resin 'cap' over the 'splayed' wires at each end of the sample. This allows the wire rope sample to be locked into the tensile test machine without affecting the strength of the wires, thus ensuring an accurate test result.
Elongation of the sample is also recorded against the applied load and this information is provided in the test report.
Rope Visual Inspection
Following destructive testing, a detailed visual inspection of the wire rope is conducted with inspection results also included in the test report.
TestSafe Australia is NATA accredited for the following:
- 13.05.72 Proof, breaking load and extension tests in the range 200 N to 2800 kN.
We will also consider undertaking test requirements to other standards, guidelines or specifications as required. Should you require any further information, please use our enquiry form.