Determination of Mechanical Properties of Operating Components Using Instrumented Hardness Testing, Small Punch and Small Size Tensile Testing Techniques

2016 ◽  
pp. 135-150
Author(s):  
Szabolcs Szávai ◽  
Péter Rózsahegyi ◽  
Judit Dudra ◽  
Róbert Beleznai ◽  
Zoltán Bézi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Testing ◽  
Hardness Testing ◽  
Small Punch ◽  
Testing Techniques

scholarly journals Determination of Mechanical Properties of Aged NPP Components Using Instrumented Hardness Testing and Other Miniature Specimen Testing Techniques

2013 ◽  
Vol 45 (4) ◽  
pp. 433-441 ◽  
Author(s):  
G. B. Lenkey ◽  
Sz. Szavai ◽  
P. Rozsahegyi ◽  
T. Koves ◽  
Sz. Jonas ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Hardness Testing ◽  
Miniature Specimen ◽  
Testing Techniques

scholarly journals EVALUASI BESAR BUTIR TERHADAP SIFAT MEKANIS CuZn70/30 SETELAH MENGALAMI DEFORMASI MELALUI CANAI DINGIN

POROS ◽  
2017 ◽  
Vol 12 (1) ◽  
pp. 58
Author(s):  
Riyan Sanjaya ◽  
Eddy S Siradj
Keyword(s):  
Mechanical Properties ◽  
Cold Rolling ◽  
Tensile Test ◽  
Tensile Testing ◽  
Rolling Process ◽  
Raw Material ◽  
Hardness Testing ◽  
Plastic Properties ◽  
Fine Microstructure ◽  
The Many

Abstract: The research was conducted because of the many industries that use CuZn 70/30 as a raw material in industrialization. CuZn 70/30 was studied to obtain the strong mechanical properties of brass. Research CuZn 70/30 was evaluated using a process of heating of about 6150 ± 50C and then held for 90 minutes. The next process is the process of cold rolling by using a variety of reduction and then tested by using a Vickers hardness testing, tensile testing, observation of the microstructure. The result of this research is a fine microstructure (below 10 μm), hardness (HV 211.67). Tensile test also conducted to get how much resistance CuZn 70/30 to resist the pull. The cold rolling process causing the decrease the mechanical properties and also increase the plastic properties of the brass. 

Evaluation of 4330M Steel for Fasteners Applications

2017 ◽  
Vol 380 ◽  
pp. 198-211 ◽  
Author(s):  
A. Al Sumait ◽  
C. Delgado ◽  
F. Aldhabib ◽  
X. Sun ◽  
F. Alzubi ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Tensile Testing ◽  
Grain Structure ◽  
Hardness Testing ◽  
Heat Treated ◽  
Different Types ◽  
Strength And Ductility ◽  
Scanning Electron

The objective of the study was to optimize the strength and ductility values of the 4330M steel. Optimization was conducted through different types of heat treatments. Tensile testing, hardness testing, optical microscopy, and Scanning Electron Microscopy (SEM) were used to evaluate the mechanical properties and microstructure of the as-received and the heat treated samples. The alloy was provided from two vendors; vendor H and vendor S. Results showed that by increasing the tempering temperatures, strength values decreases, while ductility values remain unchanged. Vendor H samples had higher strength values and much finer grain structure which was revealed only at 5000x magnification.

Application of Small Punch Techniques for the Determination of Gold Mechanical Properties

Strain ◽  
2009 ◽  
Vol 47 ◽  
pp. e484-e492 ◽  
Author(s):  
S. Cicero ◽  
R. Lacalle ◽  
F. Gutiérrez-Solana
Keyword(s):  
Mechanical Properties ◽  
Small Punch

Determination of Mechanical Properties of Magnesium Alloys and Composites by Small Punch Testing

2016 ◽  
Vol 821 ◽  
pp. 435-441 ◽  
Author(s):  
Denisa Bártková ◽  
Jiří Langer ◽  
Petr Dymáček ◽  
Libor Válka
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloys ◽  
Tensile Tests ◽  
Uniaxial Tensile ◽  
Empirical Formulas ◽  
Small Punch ◽  
Properties Of Materials ◽  
Non Destructive ◽  
Deflection Rate

Tests on miniature samples are increasingly used for the determination of mechanical properties of materials available in small volumes (non-destructive or semi-destructive approach). Small punch testing at constant deflection rate (SPT-CDR) of selected magnesium alloys and composites was performed at room temperature. Mechanical properties (yield strength, ultimate strength) were evaluated from SPT and correlated with results of uniaxial tensile tests (UTT). SPT characteristics were converted to uniaxial tensile properties by empirical formulas available in the literature. New formulas more appropriate for magnesium alloys were suggested.

Influence of Copper Ions on Mechanical Properties of PVA-Based Nanofiber Textiles

2013 ◽  
Vol 486 ◽  
pp. 201-204 ◽  
Author(s):  
Zuzana Rácová ◽  
Pavla Ryparová ◽  
Richard Hlaváč ◽  
Pavel Tesárek ◽  
Václav Nežerka
Keyword(s):  
Mechanical Properties ◽  
Polymer Solution ◽  
Tensile Testing ◽  
Textile Industry ◽  
Civil Engineering ◽  
Copper Ions ◽  
Reference Sample ◽  
Antibacterial Treatment ◽  
Strength And Stiffness

The nanofiber textiles are utilized in the textile industry, as a treatment of exposed surfaces, they find their use in medicine and in future they might be used in civil engineering as vapor barriers. For some applications it is advantageous to use the textiles with special, e.g. antibacterial, treatment by means of silver or copper ions. This paper is focused on the determination of mechanical properties of PVA-based nanofiber textiles produced by electro-spinning. The polymer solution used for electrospinning contained copper in the form of ions. The results of the tensile testing were compared with the results for the reference sample without any additives. The results indicate that the addition copper ions cause an increase of the strength and stiffness.

Determination of Mechanical Properties of Metallic Materials from Very Small Volumes by Means of Small Punch Test

2017 ◽  
Vol 741 ◽  
pp. 116-121
Author(s):  
Petr Dymáček ◽  
Ferdinand Dobeš ◽  
Luboš Kloc
Keyword(s):  
Mechanical Properties ◽  
Stress Relaxation ◽  
Metallic Materials ◽  
Small Punch Test ◽  
Test Setup ◽  
Small Punch ◽  
Punch Test ◽  
Static Fracture

The paper summarizes capabilities of the small punch tests on miniature disc specimens from metallic materials. Results obtained by small punch tests can be correlated with mechanical properties determined by conventional or other miniature tests. Three basic types of small punch test setup: i) static/fracture, ii) creep and iii) stress relaxation are described and the basic quantities that can be obtained are shown. Relations for an assessment of conventional mechanical properties from quantities obtained by small punch test are presented.

Implementation of Small Punch Testing and Automated Ball Indentation in the Process of Irradiated NPP Materials Degradation Evaluation

2016 ◽  
Author(s):  
Radim Kopriva ◽  
Ivana Eliasova ◽  
Milos Kytka
Keyword(s):  
Material Properties ◽  
Current Trend ◽  
Materials Testing ◽  
Design Modification ◽  
Small Punch ◽  
Ball Indentation ◽  
Operational Life ◽  
Surveillance Programs ◽  
Testing Techniques

In the terms of nuclear power plant operational life management, current trend of components lifetime extension requires precise and credible information of structural material degradation. Present-day standard conventional methods of mechanical testing are usually based on the use of large specimens and higher consumption of testing material, whose availability and volume is often limited. For determination of material properties, sampling of the necessary volume of material is in most cases connected with affecting the integrity or even destruction of the assessed component. Moreover, several components are not usually covered surveillance programs, e.g. reactor pressure vessel internals. Innovative testing methods of Small Punch Testing (SPT) and Automated Ball Indentation Test (ABIT) are based on the determination of material properties from miniaturized testing specimens and their semi-destructive approach is very promising for the possibility of present data base of irradiated materials testing results enlargement and enable the option of component in-situ testing (ABI testing). Paper describes the process of implementation of Small Punch Testing and Automated Ball Indentation Testing techniques in the evaluation of mechanical properties of irradiated NPP structural materials degradation. Presentation depicts all necessary steps carried out at the Hot Cell facility of UJV Rez, a. s. (Integrity and Technical Engineering Division) for the employment of these innovative testing techniques to the portfolio of accredited mechanical tests performed within the frame of surveillance programs of WWER type reactors — e.g. preliminary design, modification of the testing equipment, fractography analyses etc. Detailed comparison between the results of standard conventional testing techniques and SPT and ABIT for both initial unirradiated and irradiated state for the material A533B (JRQ) is included for determination of suitability of used methods for testing of materials within the surveillance programs of WWER type reactors.

Characterization of the Mechanical Properties of Spring Materials

1974 ◽  
Vol 96 (3) ◽  
pp. 839-844 ◽  
Author(s):  
G. F. Weissmann ◽  
B. C. Wonsiewicz
Keyword(s):  
Mechanical Properties ◽  
Quality Control ◽  
Tensile Strength ◽  
Elastic Modulus ◽  
Energy Dissipation ◽  
Yield Strength ◽  
Tensile Testing ◽  
Control Applications

Spring materials are purchased under specifications which impose limits on the tensile strength but do not control the crucial properties, i.e., resistance to plastic flow and stiffness. Present techniques for characterizing spring material are discussed in detail. A novel test is described which is quick, inexpensive, and reliable and holds promise for both research and quality control applications. The test is based on a dynamic determination of energy dissipation in a sample stressed in bending or torsion, the usual modes of deformation for most springs. Stiffness and permissible deformations are determined directly and the elastic modulus and yield strength can be calculated easily. The results obtained in this way compare favorably with those determined by tensile testing. An example is given which illustrates the operation of the test and the calculation of results. Since the entire test from sample preparation to calculation of results requires about five minutes, and since the apparatus should be relatively inexpensive, the test ought to find application in many areas where testing is not practical at the present time.

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