Crazing Initiation and Growth in Polymethyl Methacrylate under Effects of Alcohol and Stress

Article Materials Science, Characterization & Testing

Filler loading effect of Al2O3/TiO2 nanoparticles on physical and mechanical characteristics of dental base composite (PMMA)

A. Nabhan et al.

Summary: This study focuses on enhancing the performance of PMMA composites by adding a hybrid of Al2O3 and TiO2 nanoparticles. Experimental results showed that nanocomposites with 0.8% filler content exhibited the best performance.

POLYMER TESTING (2023)

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Article Engineering, Manufacturing

Effect of Indirect Cryogenic Cooling on the Machining Accuracy and Tool Vibration in the Turning of Polysulfone

Yongqing Wang et al.

Summary: This paper investigates the effects of different conditions on the contour profile of machined surfaces and tool vibration during the machining of precise polymer parts. It proposes an indirect cryogenic cooling method to improve machinability and inhibit crack generation.

JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME (2022)

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Article Materials Science, Characterization & Testing

The effects of the weathering methods on the properties of the ABS, ASA and PMMA polymers

Fatma Filiz Yildirim et al.

Summary: This study investigated the effects of natural and accelerated weathering methods on the mechanical and color properties of three thermoplastic polymers commonly used in the automotive industry. The results showed a high correlation between natural and accelerated weathering methods, with PMMA samples performing the best.

POLYMER TESTING (2022)

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Article Polymer Science

Influence of Stress Level and Fibre Volume Fraction on Fatigue Performance of Glass Fibre-Reinforced Polyester Composites

Mahmoud Yousry Zaghloul et al.

Summary: Fibre-reinforced polymeric composite materials are increasingly being used in the repair and replacement of metallic materials due to their high stiffness. This study investigates the effects of fibre volume fraction and stress level on the fatigue performance of glass fibre-reinforced polyester (GFRP) composites, and validates prediction models for fatigue life.

POLYMERS (2022)

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Article Polymer Science

Environmental Stress Cracking of High-Density Polyethylene Applying Linear Elastic Fracture Mechanics

Maximilian Thuy et al.

Summary: The crack propagation rate of environmental stress cracking on high-density polyethylene was investigated under static loading conditions. Different environmental liquids were tested, including water, aqueous solution, solvents, and detergents. The study revealed that crack growth in surface-active media is influenced by the plasticization and blunting effects caused by solvents. The crack propagation rate followed the Paris-Erdogan law, and scanning electron micrographs showed distinct creep behavior of fibrils. The limitations of linear elastic fracture mechanisms for visco-elastic polymers exposed to environmental liquids were also discussed.

POLYMERS (2022)

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Article Materials Science, Characterization & Testing

Novel triaxial experimental investigation on compressive behavior of hollow glass microspheres composites under varied temperature environments

Gangjun Zhai et al.

Summary: This paper investigates the compressive behavior of solid buoyancy materials under different temperature gradients and stress states, revealing the glass transition temperature and energy absorption of the material. The findings are significant for constructing yield criteria and understanding parameter sensitivity.

POLYMER TESTING (2022)

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Article Materials Science, Multidisciplinary

Experimental investigation on laser cutting of PMMA sheets: Effects of process factors on kerf characteristics

Ahmed B. Khoshaim et al.

Summary: This study investigated the effects of continuous CO2 laser cutting of PMMA and established an experimental plan and regression models to correlate different process responses with process factors. It was found that the cut surface can be classified into different zones, and recommendations were made to optimize the cutting parameters for minimizing heat affected zone and surface roughness.

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T (2021)

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Review Polymer Science