Investigation of Fracture in Transparent Glass Fiber Reinforced Polymer Composites Using Photoelasticity

2004 ◽  
Vol 126 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Sanjeev K. Khanna ◽  
Marius D. Ellingsen ◽  
Robb M. Winter
Keyword(s):  
Mode I ◽  
Fiber Reinforced ◽  
Field Equations ◽  
Static Mode ◽  
Transparent Glass ◽  
Isochromatic Fringe ◽  
Fiber Reinforced Plastic ◽  
Plastic Composite ◽  
Reinforced Plastic ◽  
Fringe Patterns

Fiber-reinforced plastic composite materials are being widely used in a variety of load bearing and high-performance structures. Reliable use and optimum design requires accurate methods for predicting their fracture behavior, among other things. Fiber reinforced plastic composites are generally opaque and hence experimental fracture mechanics studies utilize surface measurements or post-fracture analysis. Hence quality transparent glass cloth reinforced polyester composites have been fabricated and transmission photoelasticity used to investigate quasi-static Mode-I fracture. The isochromatic fringe patterns obtained were analyzed using orthotropic photoelasticity to determine Mode-I stress intensity factors. Opening mode stress field equations in conjunction with an orthotropic stress-optic law were utilized to regenerate the isochromatic fringe patterns. Good agreement was found between the regenerated fringe patterns and the experimentally obtained patterns

scholarly journals Recycling of Waste Fiber-Reinforced Plastic Composites: A Patent-Based Analysis

Recycling ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 72
Author(s):  
Beatrice Colombo ◽  
Paolo Gaiardelli ◽  
Stefano Dotti ◽  
Flavio Caretto ◽  
Gaetano Coletta
Keyword(s):  
Future Development ◽  
Industrial Applications ◽  
Growth Potential ◽  
Chemical Recycling ◽  
Fiber Reinforced ◽  
Mechanical Recycling ◽  
Fiber Reinforced Plastic ◽  
Technology Roadmap ◽  
Plastic Composite ◽  
Reinforced Plastic

Fiber-reinforced plastic composite materials are increasingly used in many industrial applications, leading to an increase in the amount of waste that must be treated to avoid environmental problems. Currently, the scientific literature classifies existing recycling technologies into three macro-categories: mechanical, thermal, and chemical; however, none are identified as superior to the others. Therefore, scholars and companies struggle to understand where to focus their efforts. Patent analysis, by relying on quantitative data as a precursor to new technological developments, can contribute to fully grasping current applications of each recycling technology and provide insights about their future development perspectives. Based on these premises, this paper performs a patent technology roadmap to enhance knowledge about prior, current, and future use of the main recycling technologies. The results show that recycling macro-categories have different technology maturity levels and growth potentials. Specifically, mechanical recycling is the most mature, with the lowest growth potential, while thermal and chemical recycling are in their growth stage and present remarkable future opportunities. Moreover, the analysis depicts several perspectives for future development on recycling technologies applications within different industries and underline inter- and intra-category dependencies, thus providing valuable information for practitioners and both academic and non-academic backgrounds researchers interested in the topic.

The Key Technologies of Belt Grinding of Glass Fiber Reinforced Plastic Composite

2009 ◽  
Vol 416 ◽  
pp. 149-153
Author(s):  
Li Na Si ◽  
Yun Huang ◽  
Zhi Huang ◽  
Yu Fu Wang
Keyword(s):  
Fiber Reinforced ◽  
Belt Grinding ◽  
Plastic Properties ◽  
Glass Fiber Reinforced Plastic ◽  
Fiber Reinforced Plastic ◽  
Abrasive Belt ◽  
Plastic Composite ◽  
Glass Fiber Reinforced ◽  
Reinforced Plastic ◽  
Different Parts

In this paper, performing experiment on abrasive belt grinding of glass reinforced plastic, the reasons why belt is slipping is analyzed under such circumstances when glass reinforced plastic is grinded by wet abrasive belt, a basis for the fiber reinforced plastic properties of an effective method of grinding is proposed, a solution that belt is slipping in the process is proposed too. At last, a basis is given to choose the correct hardness which on depend different parts of the hardness of the round of contacts.

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