Comparison of ABI Technique and Standard Methods in Measuring Mechanical Properties of Aluminium Al-aloys

Puchnin, Maxim; Trudonoshyn, Oleksandr; Prach, Olena; Pešlová, Františka

doi:10.21062/ujep/x.2016/a/1213-2489/mt/16/3/600

Cited by 4 publications

(1 citation statement)

References 15 publications

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“…ABI is suitable for finding coefficients of a power law hardening material model, by calculating a stress-strain curve from the indentation diameter, the indenter diameter, applied load and a correlation parameter, which is found iteratively. The strain Puchnin et al 109 and Patil et al 112 Ammar et al 108 and Wang et al 110 Kulkarni et al 114 Bespoke specimens Knitel et al 181 Kazakeviciute et al 188 hardening exponent can be found to within 2% of the actual value. 101 There was a linear correlation between small punch strain hardening index (calculated from maximum load and limit load) and tensile test strain hardening index, which allowed to convert one into another.…”

Section: Plastic Behaviourmentioning

confidence: 90%

Small specimen techniques for estimation of tensile, fatigue, fracture and crack propagation material model parameters

Kazakeviciute

Rouse

Focatiis

et al. 2021

The Journal of Strain Analysis for Engineering Design

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Small specimen mechanical testing is an exciting and rapidly developing field in which fundamental deformation behaviours can be observed from experiments performed on comparatively small amounts of material. These methods are particularly useful when there is limited source material to facilitate a sufficient number of standard specimen tests, if any at all. Such situations include the development of new materials or when performing routine maintenance/inspection studies of in-service components, requiring that material conditions are updated with service exposure. The potentially more challenging loading conditions and complex stress states experienced by small specimens, in comparison with standard specimen geometries, has led to a tendency for these methods to be used in ranking studies rather than for fundamental material parameter determination. Classifying a specimen as ‘small’ can be subjective, and in the present work the focus is to review testing methods that utilise specimens with characteristic dimensions of less than 50 mm. By doing this, observations made here will be relevant to industrial service monitoring problems, wherein small samples of material are extracted and tested from operational components in such a way that structural integrity is not compromised. Whilst recently the majority of small specimen test techniques development have focused on the determination of creep behaviour/properties as well as sub-size tensile testing, attention is given here to small specimen testing methods for determining specific tensile, fatigue, fracture and crack growth properties. These areas are currently underrepresented in published reviews. The suitability of specimens and methods is discussed here, along with associated advantages and disadvantages.

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Section: Plastic Behaviourmentioning

confidence: 90%

Small specimen techniques for estimation of tensile, fatigue, fracture and crack propagation material model parameters

Kazakeviciute

Rouse

Focatiis

et al. 2021

The Journal of Strain Analysis for Engineering Design

View full text Add to dashboard Cite

show abstract

Utilization of Advanced Computational Methods to Predict Spring-back of Aluminium Alloys in Automotive Industry

Solfronk¹,

Sobotka²,

Koreček³

2020

Manufacturing Technology

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The automotive industry is one of the most dynamically developing segments of the industrial production all over the World. The implementation of still more demanding emission limits for newly developed cars forces car producers to continuously reduce the fuel consumption of cars. As one possibility there are used hybrid drive units in combination with a redesigning the car-body while maintaining the highest possible level of vehicle safety. Because of these reasons, the automotive industry has been increasingly forced to implement and process low density (lightweight) alloys -including aluminium-based alloys. So these materials are subjected to high demands both in terms of mechanical properties and technological workability in the mass production process. The utilization of mathematical modelling (numerical simulations) at production processes is now one of the standards in all phases at designing and production of the car-body and allows implementation of variable shape modifications in a relatively short time scale. Moreover, it enable to detect the potential production problems as well. In this paper, the influence of the kinematic hardening model on the accuracy of spring-back prediction is shown in comparison with the commonly used isotropic hardening model. For deformation analysis, a simple workpiece having "U-shape" of EN AW 6111 material was used. Such aluminium alloys is used for production car-body panels in the automotive industry. Achieved accuracy of numerical simulation results is here evaluated by the comparison shape obtained by numerical simulations and shape of experimentally bended workpiece.

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Rapid Determination of Changes in Material Properties of Water Turbines Blades

Puchnin¹,

Pešlová²,

Kuchař³

et al. 2022

Manufacturing Technology

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The changes in the material properties of water turbine blades are characterized an undesirable process, which could lead to the end of usable life or to the emergency conditions of this turbine. For this reason, it is important to determine of any material quality changes and continuously monitor them. Considering that, these essential parameters are showing the ability of material to resist the operational stress. It is necessary to choose rapid methods of the material testing which are without preparation of the samples (it is inadmissible to the functional blades) able to immediately monitor the state of the materials by nondestructive methods. Due to mechanical stress and operational wear, the losses and damage occur in the water turbine blades, as the result, it leads to the deformation changes. This article is focused on the methodology of determination mechanical properties of corrosion-resistant steel, which is used on a large scale for the production of hydraulic elements and especially blades of water turbines.

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Comparison of ABI Technique and Standard Methods in Measuring Mechanical Properties of Aluminium Al-aloys

Cited by 4 publications

References 15 publications

Small specimen techniques for estimation of tensile, fatigue, fracture and crack propagation material model parameters

Small specimen techniques for estimation of tensile, fatigue, fracture and crack propagation material model parameters

Utilization of Advanced Computational Methods to Predict Spring-back of Aluminium Alloys in Automotive Industry

Rapid Determination of Changes in Material Properties of Water Turbines Blades

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