CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Estimation of Grain Orientation in an Anisotropic Weld by Using a Model of Ultrasonic Propagation in an Inverse Scheme

Qingwei Liu (Institutionen för material- och tillverkningsteknik, Avancerad oförstörande provning) ; Håkan Wirdelius (Institutionen för material- och tillverkningsteknik, Avancerad oförstörande provning)
Modelling and Simulation in Engineering (1687-5591). Vol. 2014 (2014), p. 11.
[Artikel, refereegranskad vetenskaplig]

The initial step towards a nondestructive technique that estimates grain orientation in an anisotropic weld is presented in this paper. The purpose is to aid future forward simulations of ultrasonic NDT of this kind of weld to achieve a better result. A forward model that consists of a weld model, a transmitter model, a receiver model, and a 2D ray tracing algorithm is introduced. An inversion based on a multiobjective genetic algorithm is also presented. Experiments are conducted for both P and SV waves in order to collect enough data used in the inversion. Calculation is conducted to fulfill the estimation with both the synthetic data and the experimental data. Concluding remarks are presented at the end of the paper.

Nyckelord: austenitic weld, grain orientation, ultrasonic NDT, multi-objective genetic algorithm



Den här publikationen ingår i följande styrkeområden:

Läs mer om Chalmers styrkeområden  

Denna post skapades 2014-07-03. Senast ändrad 2014-09-02.
CPL Pubid: 200097