Summary of Analysis to Predict Laser Induced Crack Initiation Using the Extended Finite Element Method
Abstract
With the use of controllable-pulse-shape pulsed laser heating (PLH), we can induce thermal cracks in a systematic way, in a small area, with a large number of repetitions, that gives us the ability to generate a large statistical population of data that will isolate the conditions in which cracks arise. After which Metallography is performed, allowing us to visualize the entire crack pattern induced by the laser. From this test data, we have analyzed how adjusting extended finite element material properties and mesh density to predict the crack initiation and stress response The results from the physical test data showed large spread of crack depths that were independent of the number of pulses. This corresponded with the finite element results showing the crack propagated in the first few pulses and then stayed at that depth for the remaining pulses. We observed comparable crack depths and crack quantities under the pulse in both the physical and FEA simulations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 26, 2024
- Accession Number
- AD1228062
Entities
People
- Gregory Vigilante
- Michael Macri
- Zachary Carpenter