Influence of aluminum layer thickness on the fatigue properties of super-nickel alloy and crack detection by non-destructive techniques

2016 ◽  
pp. 317-320
Author(s):  
D Kukla ◽  
Z Kowalewski
Keyword(s):  
Nickel Alloy ◽  
Layer Thickness ◽  
Crack Detection ◽  
Fatigue Properties ◽  
Aluminum Layer ◽  
Non Destructive ◽  
Non Destructive Techniques

How to combine several non-destructive techniques for a better assessment of concrete structures

2008 ◽  
Vol 38 (6) ◽  
pp. 783-793 ◽  
Author(s):  
D. Breysse ◽  
G. Klysz ◽  
X. Dérobert ◽  
C. Sirieix ◽  
J.F. Lataste
Keyword(s):  
Concrete Structures ◽  
Non Destructive ◽  
Non Destructive Techniques

Vibration-Based Crack Detection in L-Frames

2014 ◽  
Vol 658 ◽  
pp. 261-268
Author(s):  
Jean Louis Ntakpe ◽  
Gilbert Rainer Gillich ◽  
Florian Muntean ◽  
Zeno Iosif Praisach ◽  
Peter Lorenz
Keyword(s):  
Strain Energy ◽  
Crack Detection ◽  
Natural Frequencies ◽  
Vibration Modes ◽  
Structural Elements ◽  
Element Analysis ◽  
Accurate Localization ◽  
Mathematical Expressions ◽  
Measurement Results ◽  
Non Destructive

This paper presents a novel non-destructive method to locate and size damages in frame structures, performed by examining and interpreting changes in measured vibration response. The method bases on a relation, prior contrived by the authors, between the strain energy distribution in the structure for the transversal vibration modes and the modal changes (in terms of natural frequencies) due to damage. Using this relation a damage location indicator DLI was derived, which permits to locate cracks in spatial structures. In this paper an L-frame is considered for proving the applicability of this method. First the mathematical expressions for the modes shapes and their derivatives were determined and simulation result compared with that obtained by finite element analysis. Afterwards patterns characterizing damage locations were derived and compared with measurement results on the real structure; the DLI permitted accurate localization of any crack placed in the two structural elements.

First-time observation of Mastro Giorgio masterpieces by means of non-destructive techniques

2006 ◽  
Vol 83 (4) ◽  
pp. 475-483 ◽  
Author(s):  
G. Padeletti ◽  
G.M. Ingo ◽  
A. Bouquillon ◽  
S. Pages-Camagna ◽  
M. Aucouturier ◽  
...  
Keyword(s):  
Time Observation ◽  
First Time ◽  
Non Destructive ◽  
Non Destructive Techniques

scholarly journals Investigation of new volumetric non-destructive techniques to characterise additive manufacturing parts

2018 ◽  
Vol 62 (5) ◽  
pp. 1049-1057 ◽  
Author(s):  
A-F. Obaton ◽  
M-Q. Lê ◽  
V. Prezza ◽  
D. Marlot ◽  
P. Delvart ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Non Destructive ◽  
Non Destructive Techniques

Experiences in Examining and Dispositioning Flaws in Zr-2.5Nb Pressure Retaining CANDU Reactor Components

2002 ◽  
Author(s):  
Andrew Celovsky ◽  
John Slade
Keyword(s):  
Service Life ◽  
Reactor Core ◽  
Pressure Tube ◽  
Candu Reactors ◽  
Periodic Inspection ◽  
Pressure Tubes ◽  
Surveillance Programs ◽  
Non Destructive ◽  
Limited Service ◽  
Non Destructive Techniques

CANDU reactors use Zr-2.5 Nb alloy pressure tubes, as the primary pressure boundary within the reactor core. These components are subject to periodic inspection and material surveillance programs. Occasionally, the inspection program uncovers a flaw, whereupon the flaw is assessed as to whether it compromises the integrity of the pressure-retaining component. In 1998, such a flaw was observed in one pressure tube of a reactor. Non-destructive techniques and analysis were used to form a basis to disposition the flaw, and the component was fit for a limited service life. This component was eventually removed from service, whereupon the destructive examinations were used to validate the disposition assumptions used. Such a process of validation provides credibility to the disposition process. This paper reviews the original flaw and its subsequent destructive evaluation.

Assessment of a Medieval Arch Bridge Resorting to Non-destructive Techniques and Numerical Tools

2019 ◽  
pp. 464-472
Author(s):  
Daniel V. Oliveira ◽  
Reza Allahvirdizadeh ◽  
Ana Sánchez ◽  
Belen Riveiro ◽  
Nuno Mendes ◽  
...  
Keyword(s):  
Arch Bridge ◽  
Numerical Tools ◽  
Non Destructive ◽  
Non Destructive Techniques
Sign in / Sign up

Export Citation Format

Share Document