Temperature and heat effects on polyethylene behaviour in the presence of imperfections

Murariu, Alin Constantin; Šajić, Jasmina Lozanović

doi:10.2298/tsci151110220m

Cited by 4 publications

(3 citation statements)

References 8 publications

(7 reference statements)

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“…This means that it takes a lot of energy to manipulate the HDPE material's temperature and initiate heat transfer over the thickness of the object. Regardless, a number of studies have demonstrated the effectiveness of IRT for polyethylene components, such as pipes [23][24][25], pipe joints [26][27][28], and composites [29]. To accommodate the low thermal diffusivity, six 500-watt halogen lamps with a total power of 3000 watts at a distance of 0.4 m were used to heat up the object for three minutes.…”

Section: Infrared Thermography (Irt)mentioning

confidence: 99%

Laboratory Study on Non-Destructive Evaluation of Polyethylene Liquid Storage Tanks by Thermographic and Ultrasonic Methods

2021

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High-density polyethylene (HDPE) above-ground storage tanks (AST) are used by highway agencies to store liquid deicing chemicals for the purpose of road maintenance in the winter. A sudden AST failure can cause significant economic and environmental impacts. While ASTs are routinely inspected to identify signs of aging and damage, current methods may not adequately capture all defects, particularly if they are subsurface or too small to be seen during visual inspection. Therefore, to improve the ability to identify potential durability issues with HDPE ASTs, additional non-destructive evaluation (NDE) techniques need to be considered and assessed for applicability. Specifically, this study investigates the efficiency of using infrared thermography (IRT) as a rapid method to simultaneously examine large areas of the tank exterior, which will be followed by closer inspections with conventional and phased array ultrasonic testing (UT) methods. Results show that IRT can help to detect defects that are shallow, specifically located within half of the tank’s wall thickness from the surface. UT has the ability to detect all defects at any depth. Moreover, phased array UT helps to identify stacked defects and characterize each defect more precisely than IRT.

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Section: Infrared Thermography (Irt)mentioning

confidence: 99%

Laboratory Study on Non-Destructive Evaluation of Polyethylene Liquid Storage Tanks by Thermographic and Ultrasonic Methods

2021

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“…For the purpose of measuring the temperature field, the infrared thermography method was used. This method has numerous applications, one of which is the quality assessment of high-density polyethilene (HDPE) pipes [3,7]. Infrared thermography involves the use of special thermographic cameras which detect radiation within the infrared spectrum, emitted by the specimen, and based on its levels, determine the temperature distribution.…”

Section: Methodsmentioning

confidence: 99%

“…Polyethylene has found its application in the manufacturing of pipe systems, primarily for the transport of water and gas, wherein it has been used for over 40 years [1][2][3]. The main advantages over other materials used for pipelines include good weldability, corrosion resistance, and light weight [4].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of tensile testing of PE 80 polymer specimens

Sedmak¹,

Golubović

Murariu

et al. 2018

THERM SCI

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The aim of this paper is to present the behaviour of specimens made of polyethylene material PE 80, subjected to tensile load until failure. Measurements of the temperature distribution have been done using the infrared thermography during specimens loading. Finite element analysis was performed in ABAQUS software, where numerical models were made based on the thermograms and force-displacement diagrams obtained from these experiments. Afterwards, results from the simulation were compared with the experimental results and it was determined in which way the model can be optimized so that these results comply at an acceptable level. Numerical model has shown that the highest values of plastic strain were located near the notch. Value of this plastic strain is several times greater than the values in the remaining parts of the specimen. The numerical analysis also determined that defining the load in displacement form was a much better solution than defining it using the force, since the results have shown much better compliance, and the calculation time was much shorter in this case.

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A proposal of a new material for greenhouses on the basis of numerical, optical, thermal and mechanical approaches

Сфарра

Perilli

Ambrosini

et al. 2017

Construction and Building Materials

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Temperature and heat effects on polyethylene behaviour in the presence of imperfections

Cited by 4 publications

References 8 publications

Laboratory Study on Non-Destructive Evaluation of Polyethylene Liquid Storage Tanks by Thermographic and Ultrasonic Methods

Laboratory Study on Non-Destructive Evaluation of Polyethylene Liquid Storage Tanks by Thermographic and Ultrasonic Methods

Numerical simulation of tensile testing of PE 80 polymer specimens

A proposal of a new material for greenhouses on the basis of numerical, optical, thermal and mechanical approaches

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