| EPSRC Reference: |
GR/J32176/01 |
| Title: |
NUMERICAL MODELLING OF ELASTIC WAVE INTERACTIONS WITH A DIFFUSION BOND |
| Principal Investigator: |
Saffari, Professor N |
| Other Investigators: |
|
| Researcher Co-Investigators: |
|
| Project Partners: |
|
| Department: |
Mechanical Engineering |
| Organisation: |
UCL |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 January 1994 |
Ends: |
31 December 1995 |
Value (£): |
84,953
|
| EPSRC Research Topic Classifications: |
| Materials Characterisation |
|
|
| EPSRC Industrial Sector Classifications: |
| Aerospace, Defence and Marine |
|
|
| Related Grants: |
|
| Panel History: |
|
|
Summary on Grant Application Form |
|
Ultrasonic nondestructuve evaluation (NDE) methods are currently being investigated for detection and characterisation of anomalies at solid/solid diffusion bonds which are extensively used in aerospace structures. The successful development of an effective NDE technique depends on a full understanding of the physics of ultrasound interaction with the test material. This can be best achieved through numerical simulation of the wave propagation and scattering in the test material. Numerical models provide controllable quantitative information, subject to their own limits on accuracy, but free from the uncertainties attached to many practical ultrasonic measurements. The Ultrasonics Research Group at University College London has been working on the development of explicit finite-difference (FD) and hybrid finite-element/finite-different (FE/FD) models for simulating ultrasound interactions in solids and fluids. The objectives of the proposed project will be to develop a 2-dimensional FD model to treat the scattering from an imperfect interface composed of a distribution of discrete defects, to develop a low frequency model based on the formation of an interphase composite layer at the interface, and to investigate the effect of bondline waviness by introducing sloped boundaries for the two sides of the effective interface layer.
|
|
Key Findings |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
|
Potential use in non-academic contexts |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
|
Impacts |
|
| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
|
| Date Materialised |
|
|
|
|
Sectors submitted by the Researcher |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
| Project URL: |
|
| Further Information: |
|
| Organisation Website: |
|