Load-bearing components and structures in all industrial sectors such as automotive, vehicle, railway, aerospace, steel and bridge constructions are exposed to complex stresses. Many technical cases of damage can be attributed to material fatigue due to cyclic mechanical loading. In order to ensure the reliable use of critical components, the assessment of material fatigue is of decisive importance.
On the basis of our material and damage models for components and structures subjected to fatigue loading, we perform reliable service lifetime calculations so our customers are able to fully benefit from the potential of the strength reserves of their construction materials under extreme loads.
For the design and assessment of safety-relevant components, fracture mechanics methodologies are state-of-the-art. In the presence of crack-like defects (detected or postulated), the methods of fracture mechanics provide information about the fitness of purpose of components, the remaining service life and the safety regarding an uncontrolled crack growth. Well-founded decisions about commissioning, lifetime extension, periodic inspections or the exchange of a component can be provided on this basis. Typical industrial areas for the application of fracture mechanics are:
We support our customers with our competencies in material testing, numerical simulation, analytical failure assessment and failure analysis related to fracture mechanics questions. Together with our customers, we develop solutions for the assessment of the safety and the remaining service lifetime of machines and plants, the extension of their service lifetime, the determination of inspection intervals, the design optimization and a safety-related material selection. Moreover, we offer support for the preparation of expert reports and represent investigation results before technical regulatory authorities.
IWM VERB is a software tool which is used for the assessment of components with crack-like defects. The numerical basis of the software consists of elastic and elastic-plastic fracture mechanics methods and solutions, which are in accordance with internationally accepted guidelines and recommendations. Its application mainly refers to metallic components that are statically and cyclically loaded. However, non-metallic materials can also be assessed as long as their behavior can be described with common fracture mechanics concepts.
The failure assessment software IWM VERB is applied by many companies around the world to solve their specific fracture mechanics issues. Therefore, the development and adaptation of the software is accomplished in close collaboration with the client. Moreover, we offer training courses for the efficient application of fracture mechanics methods.
Our portfolio ranges from materials characterization to safety evaluation and lifetime assessment of components with defects.
Experimental determination of fracture mechanics parameters:
Fracture mechanics assessment:
Furthermore, we develop advanced solutions and evaluation concepts and consistently implement them into our calculation programs and the FKM guideline "Fracture mechanics strength assessment" co-developed by us (FKM = Forschungskuratorium Maschinenbau).