Application of CAX system for design and analysis of plastic parts manufactured by injection moulding

Mircheski, Ile; Łukaszewicz, Andrzej; Trochimczuk, R.; Szczebiot, Ryszard

doi:10.22616/erdev2019.18.n463

Cited by 9 publications

(11 citation statements)

References 27 publications

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“…Figure3shows the plot chart of Young's modulus and Poisson's ratio from 30 • C to 250 • C calculated via Equation(8). It indicates that Young's modulus decreases consistently when the temperature increases and Poisson's ratio increases when the temperature increases, similar to the findings of other researchers[33].…”

supporting

confidence: 79%

Ultrasonic Velocity and Attenuation of Low-Carbon Steel at High Temperatures

Tai,

Sultan,

Łukaszewicz

et al. 2023

Materials

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On-stream inspections are the most appropriate method for routine inspections during plant operation without undergoing production downtime. Ultrasonic inspection, one of the on-stream inspection methods, faces challenges when performed at high temperatures exceeding the recommended 52 °C. This study aims to determine the ultrasonic velocity and attenuation with known material grade, thickness, and temperatures by comparing theoretical calculation and experimentation, with temperatures ranging between 30 °C to 250 °C on low-carbon steel, covering most petrochemical equipment material and working conditions. The aim of the theoretical analysis was to obtain Young’s modulus, Poisson’s ratio, and longitudinal velocity at different temperatures. The experiments validated the theoretical results of ultrasonic change due to temperature increase. It was found that the difference between the experiments and theoretical calculation is 3% at maximum. The experimental data of velocity and decibel change from the temperature range provide a reference for the future when dealing with unknown materials information on site that requires a quick corrosion status determination.

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supporting

confidence: 79%

Ultrasonic Velocity and Attenuation of Low-Carbon Steel at High Temperatures

Tai,

Sultan,

Łukaszewicz

et al. 2023

Materials

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“…Today mold design requires a complex CAx system with simulation of the injection process [31][32]. This software allows predicting of defects in early stage of the plastic part design and their elimination [33][34].…”

Section: Fig 1 Influence Of Chosen Factors On Processing Shrinkage mentioning

confidence: 99%

Application of modern measurement techniques for analysis of injection moulding shrinkage

Jóźwik

Tofil

Łukaszewicz

2019

Engineering for Rural Development

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The process of polymer injection moulding is complex and complicated, therefore it is characterised by a number of technological and material parametersthat influence the product quality. Setting the best injection conditions requires knowledge of the processing properties of the material, mould shape and technological capacity of the injection moulding machine. Injection shrinkage, as undesirable phenomenon, causes changes of the shape and dimensions of the injection moulding; therefore, it is one of the most important problems that have to be solved, both at the phase of mould designing and at selecting the technological parameters of injection. The paper presents classification of injection moulding shrinkage as well as factors influencing the value of the shrinkage. The conducted experimental tests were related to selected topics connected with the injection process and took into account the change of the processed material characteristics (type and amount of filler) and change of certain, relatively the simplest to regulate, injecting parameters (injection time and cooling of the piece in a mould). Geometrical dimensions of the injection mouldings produced from polypropylene filled with glass fibre were measured using two methods: tactile (electronic measuring instrument) and contactless (3D scanning). The analysis of injection shrinkage illustrates that an effective influence on its value is possible by both choosing appropriate conditions of the injection within the technical range of the machine, as well as, if needed, the processing properties of material can be modified in order to obtain a moulded piece of set geometrical and strength properties. After the analysis of the results, the connection between the injection moulding shrinkage and the content of the filler and the chosen parameters of injection was established.

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“…Ultrasonic inspection is widely used in the petrochemical industry, such as in various base materials used in petrochemical equipment, ultrasonic inspection is a more effective way to detect any defective product before leaving the mill to ensure quality. The ultrasonic inspection also plays an important role in the process of construction or expansion of the petrochemical industry, there will be a large number of welds, whether it is welding carried out at the construction site or assembling equipment in the factory, for example, arc welding and friction welding [6], or carry out an inspection on the sub-product of the modern manufacturing techniques such as computer numerical control (CNC) machining and injection moulding [7,8].…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic Velocity and Attenuation of Low Carbon Steel at High Temperatures

Tai,

Sultan,

Łukaszewicz

et al. 2023

Preprint

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On-stream inspections are the most appropriate method for routine inspections during plant operation without going through production downtime. Ultrasonic inspection, one of the on-stream inspection methods, faces challenges when performed at high temperatures exceeding the recommended 52°C. This study aims to determine the ultrasonic velocity and attenuation with the known material grade, thickness, and temperatures by comparing theory calculation versus experiment with temperatures ranging between 30°C to 250°C on low carbon steel covering most petrochemical equipment material and working conditions. The theoretical analysis was to obtain Young's modulus, Poisson's ratio, and longitudinal velocity at different temperatures. The experiments validated the predicted results of ultrasonic change due to temperature increase and showed a maximum error of 3%. The experimental data of velocity and decibel change from the temperature range provide a reference for the future when dealing with unknown materials information on site that require a quick corrosion status determination.

show abstract

Application of CAX system for design and analysis of plastic parts manufactured by injection moulding

Cited by 9 publications

References 27 publications

Ultrasonic Velocity and Attenuation of Low-Carbon Steel at High Temperatures

Ultrasonic Velocity and Attenuation of Low-Carbon Steel at High Temperatures

Application of modern measurement techniques for analysis of injection moulding shrinkage

Ultrasonic Velocity and Attenuation of Low Carbon Steel at High Temperatures

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