Erstellung eines neuronalen Netzes zur Erkennung von Impactschäden
Preparation of training data and application of a neural network for the automated detection of impact damage of carbon fiber reinforced plastics
The WIWeB is the "know-how carrier" for non-destructive testing of materials in the German Armed Forces. The increasing use of carbon fiber reinforced plastics (CFRP) in integral structures in aerospace and automotive engineering necessitates the use of different non-destructive testing methods for damage detection and assessment. A frequently occurring damage case in CFRP materials is the so-called impact damage which can significantly reduce the mechanical load capacity of the structure, but often cannot be detected by visual inspection. Such barely visible damage is referred to as BVID - Barely Visible Impact Damage. BVIDs can be caused, for example, by bird, hail and stone impact or by dropped tools during maintenance work and lead to intra- (within the laminate layers) and interlaminar failure (between the laminate layers) inside the material.
The aim of this work is to prepare existing data from non-destructive material testing for training neural networks for automated detection of impact damage. Furthermore, possible solutions for improved automated detection of these damages shall be developed and presented.
The work mainly includes the following work packages:
- Familiarization with the structure of carbon fiber reinforced plastics (CFRP) as well as the structure and non-destructive representation of impact damage
- Literature research on concepts for the preparation and provision of data from non-destructive material testing for further processing in neural networks
- Training of neural networks for the automated detection of impact damage based on existing data from non-destructive testing of impact damage as well as other types of damage, if applicable
- Development of possible solutions for improved automated detection of impact damage
- Evaluation and discussion of the results
- Presentation and documentation of the results
The theoretical and practical work will be carried out at WIWeB in Erding (ED). The main place of work is the WIWeB or the airbase Erding.
