Recent Developments on Welding, NDT and ECA of Clad and Lined Offshore Pipelines

2019 ◽  
Author(s):  
Petrônio Zumpano ◽  
Alexandre G. Garmbis ◽  
Diogo O. Moraes ◽  
Fausto Hirata ◽  
Bruno R. M. Cunha ◽  
...  
Keyword(s):  
Non Destructive Testing ◽  
Destructive Testing ◽  
Offshore Pipelines ◽  
Alloy 625 ◽  
Recent Developments ◽  
Bimetallic Materials ◽  
Corrosion Resistant Alloy ◽  
Purge Gas ◽  
Girth Welds ◽  
Non Destructive

Abstract Due to the level of contaminants of Brazilian pre-salt fields, alloy 625, e.g. UNS N06625, clad or lined steel linepipes have been chosen in order to resist such environmental conditions. Recent advances on welding, non-destructive testing (NDT) and Engineering Critical Assessment (ECA) approaches for bimetallic materials have significantly changed since discussed in OMAE-2012. Regarding welding of alloy 625 clad and lined pipes, maximum welding interpass temperature, back purge gas control, root discoloration, visual inspection, root profile for fatigue performance and other issues are discussed herein. The Fatigue Crack Growth Rate (FCGR) to be adopted for alloy 625 is still one of the issues, since curves for alloy 625 in specific environment are normally not available. New appendix C of DNVGL-RP-F108 gives orientations regarding how to conduct tests in sour environment. DNVGL JIP on clad and lined material has made an extensive approaching of the undermatching condition of alloy 625 weld metal under different design strain levels. Regarding NDT, developments and improvements in Automated Ultrasonic Testing (AUT) methods have been obtained for inspection of Corrosion Resistant Alloy (CRA) girth welds and weld overlay. Film and digital radiography are still used for the inspection of the pipe end of the mechanically lined pipe, but ultrasonic solutions are under development. Welding and NDT challenges of alloy 625 reported in 2012 have been overcame by state-of-art technologies used in offshore rigid risers construction and installation. Alternative CRA materials are under research and development, but alloy 625 still is the most reliable option.

A Review of the Metal Magnetic Memory Technique

2016 ◽  
Author(s):  
Sheng Bao ◽  
Meili Fu ◽  
Shengnan Hu ◽  
Yibin Gu ◽  
Huangjie Lou
Keyword(s):  
Experimental Investigations ◽  
Magnetic Memory ◽  
Metal Magnetic Memory ◽  
Non Destructive Testing ◽  
Early Failure ◽  
Destructive Testing ◽  
Damage State ◽  
Recent Developments ◽  
As Stress ◽  
Non Destructive

Metal magnetic memory (MMM) is a newly developed non-destructive testing (NDT) technique. It has potentials to detect early failure, such as stress concentration, micro-crack and fatigue damage of ferromagnetic components. This paper outlines the recent developments of the mechanism studies on the MMM technique. Several advances in experimental investigations on the MMM technique are also summarized, e.g. the factors which can influence the detection signals, the criteria for judging the damage state and the magnetic parameters which can be used to assess the testing results. Finally, some future development trends about this technique are suggested.

The Non Destructive Testing Methods Applied to Detect Cracks in the Hot Section of a Turbojet

2011 ◽  
Vol 61 ◽  
pp. 79-83 ◽  
Author(s):  
Salim Bennoud ◽  
Zergoug Mourad
Keyword(s):  
Guided Waves ◽  
Effective Means ◽  
Industrial Applications ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
New Techniques ◽  
Scientific Approach ◽  
Recent Developments ◽  
Non Destructive ◽  
Standard Techniques

All aircraft whatever they are; are regularly audited. These controls are mainly visual and external; other controls such as "major inspection" or "general revisions” are more extensive and require the dismantling of certain parts of the aircraft. Some parts of the aircraft remain inaccessible and are therefore more difficult to inspect (compressor, combustion chamber, and turbine). The means of detection must ensure controls either during initial construction, or at the time of exploitation of all the parts. The Non destructive testing (NDT) gathers the most widespread methods for detecting defects of a part or review the integrity of a structure. The aim of this work is to present the different (NDT) techniques and to explore their limits, taking into account the difficulties presented at the level of the hot part of a turbojet, in order to propose one or more effective means, non subjective and less expensive for the detection and the control of cracks in the hot section of a turbojet. To achieve our goal, we followed the following steps: - Acquire technical, scientific and practical basis of magnetic fields, electrical and electromagnetic, related to industrial applications primarily to electromagnetic NDT techniques. - Apply a scientific approach integrating fundamental knowledge of synthetic and pragmatic manner so as to control the implementation of NDT techniques to establish a synthesis in order to comparing between the use of different methods. - To review recent developments concerning the standard techniques and their foreseeable development: eddy current, ultrasonic guided waves ..., and the possibility of the implication of new techniques.

scholarly journals Non-Destructive Testing of Materials in Civil Engineering

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3237 ◽  
Author(s):  
Krzysztof Schabowicz
Keyword(s):  
Building Materials ◽  
Civil Engineering ◽  
Current Trend ◽  
Building Structures ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Acoustic Methods ◽  
Recent Developments ◽  
Concrete Elements ◽  
Non Destructive

This issue was proposed and organized as a means to present recent developments in the field of non-destructive testing of materials in civil engineering. For this reason, the articles highlighted in this editorial relate to different aspects of non-destructive testing of different materials in civil engineering, from building materials to building structures. The current trend in the development of non-destructive testing of materials in civil engineering is mainly concerned with the detection of flaws and defects in concrete elements and structures, and acoustic methods predominate in this field. As in medicine, the trend is towards designing test equipment that allows one to obtain a picture of the inside of the tested element and materials. Interesting results with significance for building practices were obtained.

Recent developments in non-destructive testing of coated components

1989 ◽  
Vol 181 (1-2) ◽  
pp. 295-304 ◽  
Author(s):  
H.-A Crostack ◽  
W Jahnel ◽  
E.H Meyer ◽  
K.-J Pohl
Keyword(s):  
Non Destructive Testing ◽  
Destructive Testing ◽  
Recent Developments ◽  
Non Destructive

Selected Magnetic Resonance applications for non-destructive material testing

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Daniel Haddad ◽  
Philipp Mörchel ◽  
Markus Hildenbrand ◽  
Karl-Heinz Hiller
Keyword(s):  
Porous Media ◽  
Magnetic Resonance ◽  
Material Testing ◽  
Food Samples ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Laboratory Environment ◽  
Recent Developments ◽  
Non Destructive

AbstractMagnetic resonance’s potential is already proven in the clinical sector and for non-destructive testing also in the laboratory environment. With recent developments in technology today’s small and midsized often portable MR systems are also able to work in an industrial setup and in the field. Therefore, the number of MR applications is rapidly increasing as is the acceptance of MR as technique for non-destructive testing. Selected examples for magnetic resonance in polymers, in porous media and in food samples are shown here.

scholarly journals Special Issue: “Non-Destructive Testing of Structures”

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4996
Author(s):  
Magdalena Rucka
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Structural Materials ◽  
Non Destructive Testing ◽  
Special Issue ◽  
Destructive Testing ◽  
Structural Health ◽  
Damage Imaging ◽  
Recent Developments ◽  
Non Destructive

The Special Issue “Non-Destructive Testing of Structures” has been proposed to present recent developments in the field of diagnostics of structural materials and components in civil and mechanical engineering. The papers highlighted in this editorial concern various aspects of non-invasive diagnostics, including such topics as condition assessments of civil and mechanical structures and connections of structural elements, the inspection of cultural heritage monuments, the testing of structural materials, structural health monitoring systems, the integration of non-destructive testing methods, advanced signal processing for the non-destructive testing of structures (NDT), damage detection and damage imaging, as well as modeling and numerical analyses for supporting structural health monitoring (SHM) systems.

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