scholarly journals Preface to the 100th Volume Memorial Special Issue on Physical Metallurgy 2 –Materials Testing and Evaluation–

2014 ◽  
Vol 100 (10) ◽  
pp. 1181-1181
Author(s):  
Yuuji Kimura
Keyword(s):  
Materials Testing ◽  
Physical Metallurgy ◽  
Special Issue ◽  
Testing And Evaluation

Space debris generation in GEO: Space materials testing and evaluation

2021 ◽  
Author(s):  
S. Duzellier ◽  
P. Gordo ◽  
R. Melicio ◽  
D. Valério ◽  
M. Millinger ◽  
...  
Keyword(s):  
Space Debris ◽  
Materials Testing ◽  
Testing And Evaluation

scholarly journals Editorial

2021 ◽  
Vol 7 (2) ◽  
pp. 1
Author(s):  
Lucas F. M. da Silva
Keyword(s):  
Materials Design ◽  
Materials Testing ◽  
Metallic Materials ◽  
Special Issue ◽  
Materials Engineering ◽  
Multi Scale ◽  
Wide Range ◽  
Engineering And Technology ◽  
Computational Aspects ◽  
Fundamental Research

This special issue of University of Porto Journal of Engineering contains selected papers presented at the 3rd International Conference on Materials Design and Applications 2020 (MDA 2020), held in online during 5-6 November 2020. The goal of the conference was to provide a unique opportunity to exchange information, present the latest results as well as to discuss issues relevant to materials design and applications. The focus is on fundamental research and application areas in the field of the design and application of engineering materials, predominantly within the context of mechanical engineering applications. This includes a wide range of materials engineering and technology, including metals, e.g., lightweight metallic materials, polymers, composites, and ceramics. Advanced applications include manufacturing of new materials, testing methods, multi-scale experimental and computational aspects. Approximately 155 papers were presented by researchers from nearly 30 countries. In order to disseminate the work presented in MDA 2020, selected papers were prepared which resulted in the present special issue. A wide range of topics are covered resulting in 10 papers dealing with metals (first three papers), composites (three papers), tribology (one paper) and machining (three papers). The papers presented here are good examples of the latest trends related materials design and applications. The organizer and editor wish to thank all the authors for their participation and cooperation, which made this volume possible. Finally, I would like to thank the team of University of Porto, especially Dr. Luís Miguel Costa, for the excellent cooperation during the preparation of this volume.

scholarly journals Special Issue: Novel Approaches for Nondestructive Testing and Evaluation

2022 ◽  
Vol 12 (2) ◽  
pp. 565
Author(s):  
Jinyi Lee ◽  
Hoyong Lee ◽  
Azouaou Berkache
Keyword(s):  
Nondestructive Testing ◽  
Quality And Safety ◽  
Special Issue ◽  
Novel Approaches ◽  
Testing And Evaluation ◽  
Nondestructive Testing And Evaluation

Nondestructive testing and evaluation (NDT&E) is one of the most important techniques for determining the quality and safety of materials, components, devices, and structures [...]

CTOD Testing and Evaluation for Weld Joint for Heavy Thickness Offshore Structure Steel S355G10+N

2011 ◽  
Vol 117-119 ◽  
pp. 1597-1601
Author(s):  
Zhang Mu Miao ◽  
Ting Miao ◽  
Fu Xiang Qiu ◽  
Shu Wei Leng ◽  
Li Na Niu
Keyword(s):  
Weld Metal ◽  
Weld Joint ◽  
Solid Mechanics ◽  
Fusion Line ◽  
Materials Testing ◽  
Crack Tip Opening Displacement ◽  
Offshore Structure ◽  
Average Value ◽  
Welding Procedure ◽  
Testing And Evaluation

The design and fabrication of offshore structure depend on material science and solid mechanics, such as steel processing technology and welding and materials testing and evaluation and so on. In this paper, CTOD (Crack Tip Opening Displacement) toughness test for weld joint of heavy thickness S355G10+N steel has been carried out to evaluate the fracture resistance of this weld joint under Submerged Arc Welding(SAW). The results show that (1) the weld joint of heavy thickness S355G10+N steel tested possesses excellent toughness. That is to say the materials in the weld joint possess enough capacity resisting the crack and propagation. Therefore the welding procedure specification evaluated can be applied to fabricate offshore structure. What is more, being at the case of as-weld condition for the weld joint the CTOD test was carried out herein, hence the offshore structure fabricated with the welding procedure specification evaluated can avoid the post welding heat treatment. (2) Different positions in weld joint have their special toughness. The position which is 2mm away from the fusion line (located in base metal) (FL+2) possesses best toughness (average value is 0.825mm). The fusion line position (FL) possesses slightly worse toughness (average value is 0.672mm). The weld metal position possesses worst toughness (average value is 0.553mm). This distribution character is different from other references reported and comparision has been made in this study. (3) Being a lower fracture toughness in weld metal, as a design suggestion high stresses should be avoided in this position.

The Nature of Delta Phase Precipitation in Inconel 718

1982 ◽  
Vol 40 ◽  
pp. 724-725
Author(s):  
L. S. Lin ◽  
C. C. Law
Keyword(s):  
Inconel 718 ◽  
Base Alloy ◽  
High Strength ◽  
Physical Metallurgy ◽  
Nickel Base Alloy ◽  
Phase Precipitation ◽  
Weight Percentage ◽  
Delta Phase ◽  
The Subject ◽  
Nickel Base

Inconel 718, a precipitation hardenable nickel-base alloy, is a versatile high strength, weldable wrought alloy that is used in the gas turbine industry for components operated at temperatures up to about 1300°F. The nominal chemical composition is 0.6A1-0.9Ti-19.OCr-18.0Fe-3Mo-5.2(Cb + Ta)- 0.1C with the balance Ni (in weight percentage). The physical metallurgy of IN 718 has been the subject of a number of investigations and it is now established that hardening is due, primarily, to the formation of metastable, disc-shaped γ" an ordered body-centered tetragonal structure (DO2 2 type superlattice).

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