TC17 Non Destructive Evaluation
Prof.dr. Peter Trampus
Hungarian Association for Nondestructive Testing
Üllői út 206, 1191 Budapest, Hungary
Bay Zoltán Nonprofit Ltd. for Applied Research,
Department of Structural Integrity and Production Technologies
Iglói St. 2, 3519 Miskolc, Hungary
Structural integrity assessment of engineering components means the evaluation of their resistance to strength and fracture. It is based on three fundamental inputs: (1) the awareness of the physical fields (mechanical, thermal, magnetic, electric, electromagnetic) arising in the component during operation; (2) the properties of the structural material applied (tensile properties, fracture toughness); and (3) the size and position of existing flaws (in worst case: cracks). All of these characteristics may be subject to changes during utilization of the component (e.g. plant operation) due to the detrimental effect of ageing. Ageing can affect the material properties such as embrittlement (loss of toughness), and can contribute to propagation of cracks due to fatigue and / or corrosion. Consequently, in structural integrity assessment a continuous decrease in safety margin has to be taken into account. No need to say that all three inputs are equally important for the reliable assessment. TC 17 (Non-destructive Evaluation, NDE) as its name expresses it, deals with NDE as the basic tool for both detecting and sizing flaws and characterizing materials properties.
Structural integrity assessment models and NDE are related in both directions. On one hand, NDE is supplying the data about presence of flaws in terms of dimensions, flaw location within the wall including ligament dimension, flaw characteristics and proximity to eventual other flaws, etc. One the other hand, structural integrity assessment is formulating the requirements for the level of NDE performance like scope and inspection volume, flaw evaluation process, target detectable flaw size, sizing and localization accuracy, and – in case of in-service inspection – the inspection interval.
TC 17 does not intend to deal with NDE techniques and methods. Its major intention is to focus on and to emphasize the aforementioned aspects related to structural integrity assessment. Just as examples, NDE reliability which includes not only capability, as usually understood, but also suitability, reproducibility and repeatability will be in the agenda. Within capability demonstration (in Europe called inspection qualification), the determination of the target flaw size and its requested detection accuracy is an issued. Also, possible degradation processes, their kinetics and their requirements from non-destructive materials characterization will be dealt with.
15th International Conference on Fracture - ICF15 (June 11-16, 2023)
Winter School of Young Scientists
Special Postgraduate Course on NDT Integrity Engineering - University of Debrecen (Hungary)
The organizers at the course opening
(from left to right: Prof. Laszlo Toth, Dr. Tamas Mankovits and Prof. Peter Trampus).
In the University of Debrecen, the largest Hungarian university, a unique, two-semester postgraduate engineering course has been launched with participation of 17 students, in October 2020. The concept of the course is the initiation of the Academia NDT International because the NDT related high education is among the Academia’s highest priority tasks. The course has been prepared and being implemented in cooperation of the university and the Hungarian Association for Non-destructive Testing. NDT integrity engineering combines materials science with fracture mechanics to engineer a non-destructive evaluation process that would guarantee safety and reliability, or integrity, of engineering structures and components. It is primarily focussing on non-destructive testing / evaluation methods. Its knowledge basis encompasses all disciplines which contribute to establish any integrity related decision. The lectures are delivered by leading professors of the university as well as recognised engineers from the industry. In completing the laboratory exercises, some firms interested in both NDT technology development and service provision and also NDT users take part.
More information: Click here! (In Hungarian)
Syllabus can be found here. (English)