Composite Coupon Inter-laminar Shear Strength
In conjunction with the AMRC Composite Centre, tests are often conducted to examine the inter-laminar shear strength of various fibre/resin manufacturing combinations. The structural test centre was able to support quick turnaround of the testing to deliver the requirements of the research programme.
Classification of Mechanical Properties of Additive Layer Manufacturing
A series of 405 tests were conducted to evaluate the performance of 11 different materials produced by additive layer manufacturing. The materials were tested for tensile strength, flexural stiffness and impact resistance in three orthogonal directions of part build. Results were presented to the customer to evaluate applicability in an aerospace application.
The nature of the partners and the research at the AMRC has led to significant developments in the ASTC capability to test full scale components. The Integrated Wing project was a Technology Validation Programme and a national collaboration project among 17 UK leading organisations.
The project involved the manufacture of various demonstrator components that were tested under service conditions for static strength and fatigue life durability. As the test partner on the project, ASTC tested components to a maximum load of 130 tonnes and in fatigue for a test duration of 6 weeks. The fatigue spectrum applied was a complex flight-by-flight loading sequence supplied by the project partners from real-world on aircraft data.
Run Flat Tyre Testing
Runflat Systems Ltd and Performance Engineered Solutions collaborated on a project developing a new vehicle run flat insert system.
Static load and cyclic fatigue testing was carried out atthe ASTC to prove the concept and investigate potential failure modes within the laboratory environment.
A partner of the AMRC required a series of tests to evaluate the performance of structural composite panels, in order to validate the analysis models that had been developed. The ASTC compiled a test procedure under their ISO17025 in house methods UKAS accreditation. Rig fixtures were designed and fabricated within the AMRC and the method and equipment were validated by the customer. With the testing of high cost components and the need for control of the process to ensure accurate repeatable results, the ASTC follows internal procedures that ensure the test set up, rig function and applied loads are all validated and are in agreement with the customers before starting the test.
Due to the high value of the unit under test, it is important to gain as much information about the specimen as possible. Whilst the test was being conducted, the ASTC used specialist partners to obtain Digital Image Correlation (DIC) of the panel deflection, high speed video capture of the test failure, as well as shearography and innovative real-time ‘lamb wave’ analysis of the specimen.