Fracture energy analysis of single-edge-cracked isotropic ductile polyolefins

Wang, Min-Diaw; Nakanishi, Eiji; Hashizume, Yukichika; Hibi, Sadao

doi:10.1016/0032-3861(92)91098-m

Cited by 4 publications

(1 citation statement)

References 13 publications

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“…In order to overcome this adversity, methods of the non-linear fracture mechanics (denoted also as ductile, elastoplastic or post-yield fracture mechanics) have gained appreciable attention. Although several approaches of the latter are proposed to consider the large-scale plastic deformation during loading, the widely used method is J-integral [8][9][10][11][12]. J integral approach is proposed by Rice [13] as a two dimensional energy line integral that can be used as an analytical tool to characterize the crack tip stress and strain field under both elastic and plastic stress and strain.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cooling Medium on Fracture Toughness of Rotomoulded Product

Ramkumar¹,

Kulkarni²,

Chaudhari³

2016

AMM

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In day-to-day life, usage of plastics is numerous. It offers variety of benefits compared to other materials in various sectors like house hold applications, agricultural industry, and packaging, etc. There are numerous methods for processing plastics. These include: blow moulding, injection moulding, rotational moulding, transfer moulding and thermoforming. Rotational moulding is a competitive alternative to other plastic manufacturing process, since it offers designers an opportunity to achieve an economic production of stress free products. Many products made by rotational moulding process using linear low density polyethylene (LLDPE) are widely used in outdoor applications such as boats, over head tanks, and car body parts etc. In such applications, fracture properties are considered to be critical from the quality characterization point of view. Selection of appropriate cooling medium plays vital role to enhance the quality of rotomolded products. In this paper, an attempt has been made to investigate the effect of cooling medium on fracture toughness of the rotationally moulded products. Fracture tests are carried out on a compact tension (CT) test specimens prepared as per the ASTM D 6068 (2012). The tests are performed on a universal testing machine. R-curve method is used to determine the fracture toughness (JIC) of rotomoulded products. From the experimental results it is found that rapid cooling method favours better fracture toughness of rotomoulded products. Therefore, it is recommended to use faster cooling aids like water cooling in rotational moulding process to achieve highest fracture toughness.

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