Measurement of residual stresses on a component using neutron diffraction technique, Pre-study
| Reference number | |
| Coordinator | RISE IVF AB - Avdelning Tillverkning |
| Funding from Vinnova | SEK 100 000 |
| Project duration | June 2019 - November 2019 |
| Status | Completed |
| Venture | Research infrastructure - utilisation and collaboration |
| Call | Industrial pilot projects for utilisation of neutron- and photon based techniques at large scale infrastructures - spring 2019 |
| End-of-project report | 2019-02586 _GKN_Aerospace.pdf (pdf, 201 kB) |
Important results from the project
The aim was to investigate possibilities with residual stress measurements of thick-walled titanium components using neutron diffraction technique. A literature study has been conducted and a consortium of experts has been established. A test object has been identified as well as the appropriate facility for the implementation of the experiment has been contacted. A plan for experiments and a B application has been sent to Vinnova. The project objective has been achieved.
Expected long term effects
Several publications indicate good opportunities to measure residual stresses on thick-walled, welded components in titanium. A consortium with RISE IVF, Swerim and GKN has been established and a proposal for funding of a pilot experiment (2019-05274) has been sent to Vinnova. The ambition is to eventually establish neutron diffraction as an industrial tool for measuring residual stresses on thick-walled components and as a support for validation of residual stress calculations using FEM.
Approach and implementation
A literature study has been conducted and a test object consisting of 2 thick-walled substrate welded with electron beam welding has been identified. A consortium with RISE IVF, Swerim and GKN has been established. A plan for experiments has been developed and a large scale facility has confirmed that the experiment can be carried out. A B-application "Verification of residual stresses after electron beam welding of thick sheets of Ti-4Al-6V (TiWeld)" (no 2019-05274) has been sent to Vinnova.