scholarly journals Experimental validation of a thermal model of adhesively bonded scarf repairs for CFRP composite materials incorporating cure kinetics

2011 ◽  
Author(s):  
C. C. N. Bestley ◽  
S. G. R. Brown ◽  
S. M. Alston
Keyword(s):  
Composite Materials ◽  
Thermal Model ◽  
Experimental Validation ◽  
Cure Kinetics ◽  
Adhesively Bonded ◽  
Cfrp Composite

scholarly journals Defects and uncertainties of adhesively bonded composite joints

2021 ◽  
Vol 3 (9) ◽  
Author(s):  
Sadik Omairey ◽  
Nithin Jayasree ◽  
Mihalis Kazilas
Keyword(s):  
Composite Materials ◽  
Composite Structures ◽  
Production Efficiency ◽  
Adhesive Bonding ◽  
Detection Methods ◽  
Bonded Joints ◽  
Adhesively Bonded ◽  
Adhesively Bonded Joints ◽  
Wide Range ◽  
Bonded Composite

AbstractThe increasing use of fibre reinforced polymer composite materials in a wide range of applications increases the use of similar and dissimilar joints. Traditional joining methods such as welding, mechanical fastening and riveting are challenging in composites due to their material properties, heterogeneous nature, and layup configuration. Adhesive bonding allows flexibility in materials selection and offers improved production efficiency from product design and manufacture to final assembly, enabling cost reduction. However, the performance of adhesively bonded composite structures cannot be fully verified by inspection and testing due to the unforeseen nature of defects and manufacturing uncertainties presented in this joining method. These uncertainties can manifest as kissing bonds, porosity and voids in the adhesive. As a result, the use of adhesively bonded joints is often constrained by conservative certification requirements, limiting the potential of composite materials in weight reduction, cost-saving, and performance. There is a need to identify these uncertainties and understand their effect when designing these adhesively bonded joints. This article aims to report and categorise these uncertainties, offering the reader a reliable and inclusive source to conduct further research, such as the development of probabilistic reliability-based design optimisation, sensitivity analysis, defect detection methods and process development.

Definition and Experimental Validation of a Second-Order Thermal Model for Electrical Machines

2021 ◽  
pp. 1-1
Author(s):  
Eric Armando ◽  
Aldo Boglietti ◽  
Fabio Mandrile ◽  
Enrico Carpaneto ◽  
Sandro Rubino ◽  
...  
Keyword(s):  
Thermal Model ◽  
Experimental Validation ◽  
Second Order ◽  
Electrical Machines

Experimental validation of thermal model of open roof pond

1981 ◽  
Vol 16 (2) ◽  
pp. 93-98 ◽  
Author(s):  
M.S. Sodha ◽  
Usha Singh ◽  
Alok Srivastava ◽  
G.N. Tiwari
Keyword(s):  
Thermal Model ◽  
Experimental Validation

scholarly journals Thermal Analysis and Experimental Validation of Environmental Condition Inside Greenhouse in Tropical Wet and Dry Climate

2020 ◽  
Vol 12 (19) ◽  
pp. 8171
Author(s):  
Gauravkumar Gadhesaria ◽  
Chinmay Desai ◽  
Ravi Bhatt ◽  
Bashir Salah
Keyword(s):  
Thermal Model ◽  
Experimental Validation ◽  
Saccharum Officinarum ◽  
Point Of View ◽  
Storage Unit ◽  
Average Temperature ◽  
Air Change Rate ◽  
Suitable Climate ◽  
Controlled Environment Agriculture ◽  
The Given

A facility for controlled environment agriculture from an energy consumption point of view was investigated at the C. G. Bhakta Institute of Biotechnology, Uka Tarsadia University (21.1667° N, 72.8333° E), Bardoli, Surat, Gujarat, India. It is a tropical wet and dry region of the state of Gujarat. The study was carried out for an even span type 2.45 m × 3.65 m greenhouse with an elevation of 34 m above the sea level under the environmental conditions. A thermal model is proposed to identify the suitable climate condition for the cultivation of different varieties of Banana (Musa) and Sugarcane (Saccharum officinarum). Banana and Sugarcanes are the main crops in the Surat district, wherein around 12,400 hector and 94,500 hector cultivation are done, respectively. The experimental study was carried out during the period of December 2017 (winter) to February 2018 (winter and summer). The proposed thermal model is helpful to indicate the hourly energy balance and average temperature distribution inside the greenhouse. The greenhouse was studied for east–west orientation. The steady state analysis was utilized to find extra thermal energy other than solar radiation needed to keep the plant temperature desirable. Experimental validation of the model was carried out in even span greenhouse. At last, some important conclusions are drawn and suggestions made for further studies based on the main characteristics and results of the study. A higher air change rate seems desirable to bring down the temperature further. It was observed that the extra heating is required during the period of December to February, whereas from March onwards a storage unit is required to absorb the energy available and utilize it whenever necessary in the given climatic condition and crop.

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