scholarly journals Developing Ultra-small Scale Mechanical Testing Methods and Microstructural Investigation Procedures for Irradiated Materials

2018 ◽  
Author(s):  
Peter Hosemann ◽  
Djamel Kaoumi
Keyword(s):  
Mechanical Testing ◽  
Small Scale ◽  
Testing Methods ◽  
Microstructural Investigation

scholarly journals Current Trends in Integration of Nondestructive Testing Methods for Engineered Materials Testing

Sensors ◽  
2021 ◽  
Vol 21 (18) ◽  
pp. 6175
Author(s):  
Ramesh Kumpati ◽  
Wojciech Skarka ◽  
Sunith Kumar Ontipuli
Keyword(s):  
Nondestructive Testing ◽  
Data Acquisition ◽  
Mechanical Testing ◽  
Impact Testing ◽  
Materials Testing ◽  
Testing Methods ◽  
Molecular Arrangement ◽  
Nondestructive Techniques ◽  
Nondestructive Testing Methods ◽  
Engineered Materials

Material failure may occur in a variety of situations dependent on stress conditions, temperature, and internal or external load conditions. Many of the latest engineered materials combine several material types i.e., metals, carbon, glass, resins, adhesives, heterogeneous and nanomaterials (organic/inorganic) to produce multilayered, multifaceted structures that may fail in ductile, brittle, or both cases. Mechanical testing is a standard and basic component of any design and fabricating process. Mechanical testing also plays a vital role in maintaining cost-effectiveness in innovative advancement and predominance. Destructive tests include tensile testing, chemical analysis, hardness testing, fatigue testing, creep testing, shear testing, impact testing, stress rapture testing, fastener testing, residual stress measurement, and XRD. These tests can damage the molecular arrangement and even the microstructure of engineered materials. Nondestructive testing methods evaluate component/material/object quality without damaging the sample integrity. This review outlines advanced nondestructive techniques and explains predominantly used nondestructive techniques with respect to their applications, limitations, and advantages. The literature was further analyzed regarding experimental developments, data acquisition systems, and technologically upgraded accessory components. Additionally, the various combinations of methods applied for several types of material defects are reported. The ultimate goal of this review paper is to explain advanced nondestructive testing (NDT) techniques/tests, which are comprised of notable research work reporting evolved affordable systems with fast, precise, and repeatable systems with high accuracy for both experimental and data acquisition techniques. Furthermore, these advanced NDT approaches were assessed for their potential implementation at the industrial level for faster, more accurate, and secure operations.

Full-Scale Reeling Tests of HFI Welded Line Pipe for Offshore Reel-Laying Installation

2014 ◽  
Author(s):  
Karl Christoph Meiwes ◽  
Susanne Höhler ◽  
Marion Erdelen-Peppler ◽  
Holger Brauer
Keyword(s):  
Mechanical Testing ◽  
Mechanical Test ◽  
Strength Properties ◽  
Full Scale ◽  
Bending Test ◽  
Small Scale ◽  
Pipe Material ◽  
Deformation Capacity ◽  
Line Pipe ◽  
Tension And Compression

During reel-laying repeated plastic strains are introduced into a pipeline which may affect strength properties and deformation capacity of the line pipe material. Conventionally the effect on the material is simulated by small-scale reeling simulation tests. For these, coupons are extracted from pipes that are loaded in tension and compression and thermally aged, if required. Afterwards, specimens for mechanical testing are machined from these coupons and tested according to the corresponding standards. Today customers often demand additional full-scale reeling simulation tests to assure that the structural pipe behavior meets the strain demands as well. Realistic deformations have to be introduced into a full-size pipe, followed by aging, sampling and mechanical testing comparable to small-scale reeling. In this report the fitness for use of a four-point-bending test rig for full-scale reeling simulation tests is demonstrated. Two high-frequency-induction (HFI) welded pipes of grade X65M (OD = 323.9 mm, WT = 15.9 mm) from Salzgitter Mannesmann Line Pipe GmbH (MLP) are bent with alternate loading. To investigate the influences of thermal aging from polymer-coating process one test pipe had been heat treated beforehand, in the same manner as if being PE-coated. After the tests mechanical test samples were machined out of the plastically strained pipes. A comparison of results from mechanical testing of material exposed to small- and full-scale reeling simulation is given. The results allow an evaluation of the pipe behavior as regards reeling ability and plastic deformation capacity.

ITER baffle module small-scale mock-ups: First Wall thermo-mechanical testing results

1998 ◽  
Vol 39-40 ◽  
pp. 559-567 ◽  
Author(s):  
Y. Severi ◽  
P. Chappuis ◽  
L. Giancarli ◽  
G. Le Marois ◽  
Y. Poitevin ◽  
...  
Keyword(s):  
Mechanical Testing ◽  
Small Scale ◽  
First Wall

Evaluation of Small Amounts of Synthetic Rubber

1943 ◽  
Vol 16 (3) ◽  
pp. 679-686
Author(s):  
B. S. Garvey
Keyword(s):  
Comprehensive Evaluation ◽  
Test Tube ◽  
Distinct Advantage ◽  
Small Scale ◽  
Testing Methods ◽  
Chemical Research ◽  
Synthetic Rubber ◽  
A New Technique ◽  
New Procedures

Abstract In research on rubber synthesis, as in any broad program of chemical research, it is a distinct advantage to be able to do all work on a normal laboratory or test-tube scale. With rubber, however, the standard laboratory testing methods require from 200 to 500 grams of rubber for each batch. Hence it was obvious that, if the advantages of small-scale work in the preparational stages were to be realized, a new technique of rubber testing would have to be developed. The use of entirely new and unrelated procedures has two definite objections. In the first place the new procedures must be thoroughly tested and compared with the older methods of testing or with the processing and use requirements of the new rubbers. In the second place the significance of the results of such new tests can be conveyed, even to experienced rubber technologists, only after considerable interpretation of the methods. It seemed best, therefore, to modify standard rubber-testing methods so that they could be applied to very small amounts of synthetic rubber. More recently, the shortage of natural rubber has made necessary a reduction in the amount of rubber used for testing. For this purpose the same small-scale procedures are highly advantageous. While some idea of the quality of a sample of natural or synthetic rubber can be obtained from examination of the crude rubber itself, it is much better to know the physical properties of the vulcanized product. This means that one or more balanced compounds must be mixed and tested. The purpose of this paper is to describe a technique which has been developed in the Goodrich laboratories whereby, with as little as 5 grams of rubber, the stress-strain characteristics may be determined, and with 9 grams of rubber a fairly comprehensive evaluation can be made. This method has been used to evaluate polymers made on the 10-gram scale by Fryling.

scholarly journals Mechanical Testing Methods for Body-Powered Upper-Limb Prostheses: A Case Study

2019 ◽  
Vol 4 (5) ◽  
pp. 61-68
Author(s):  
Renato Mio ◽  
Midori Sanchez ◽  
Quino Valverde ◽  
José Lara ◽  
Francisco Rumiche
Keyword(s):  
Mechanical Testing ◽  
Upper Limb ◽  
Testing Methods ◽  
Upper Limb Prostheses

scholarly journals In-situ small-scale mechanical testing of fast reactor mixed oxide pins: completion report

2019 ◽  
Author(s):  
Fabiola Cappia ◽  
David Frazer ◽  
Brandon D. Miller ◽  
Daniel J. Murray ◽  
Alexander J. Winston ◽  
...  
Keyword(s):  
Mechanical Testing ◽  
Fast Reactor ◽  
Mixed Oxide ◽  
Small Scale
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