Dissemination DeliverablesD2.2

Deliverable 2.2

Abstract

Deliverable 2.2 reports the activities regarding the development of monitoring solution within the CIRCULAR WELD project. As already highlighted in D5.1, analysing the state of the art infrared (IR) thermography has been chosen as a monitoring solution for the thermal behaviour of the WAAM deposition process. Monitoring is crucial for guaranteeing dimensional consistency of the manufactured part and final component quality as both are heavily dependent on the thermal history of the material, just as metal properties residual stresses and consequent potential distortions.

The solution is meant for analysing temperature evolution over time during data post processing; it is not intended for active monitoring strategies. The main challenges met in employing the thermal camera are related to the analysis of the acquired data to extract useful information such as interpass temperature, obtained by manipulating maximum temperature measurements, and substrate temperatures. Furthermore, emissivity calibration is a critical aspect of the proposed monitoring solution as this value drives the data output of the thermal camera. A calibration approach using black matte paint or a compensation equation was proposed. The obtained temperature data will be instrumental in validating the thermo-mechanical model which will be utilized as input for the geometrical model.

Table of contents

1.    INTRODUCTION

2.     IMPLEMENTATION

3.     CHALLENGES

4.     APPLICATIONS

5.     CONCLUSIONS

6.     REFERENCES