Parametric and non-parametric tests for the evaluation of interlaminar fracture toughness of polymer composites

Yavuz, Hande; Utku, Durdu Hakan

doi:10.1177/0731684420973078

Cited by 8 publications

(4 citation statements)

References 26 publications

(37 reference statements)

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“…These methods are Beam Theory (BT), Modified Beam Theory (MBT), Compliance Calibration (CC), and Modified Compliance Calibration (MCC). 34,35 The mode 1 interlaminar fracture toughness (G 1c ) can be obtained based on BT using following equation.…”

Section: Methodsmentioning

confidence: 99%

Critical thrust force prediction in unidirectional CFRP drilling: An analytical modeling approach

Patel,

Chaudhary

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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In recent trends, unidirectional carbon fiber laminates have been extensively used in the aviation sector due to their remarkable material properties. Delamination is a major damage introduced during drilling in composite laminates. One of the prime contributing factors for delamination-induced damages is considered as the thrust force. A mathematical model is proposed using an analytical approach for accurate prediction of the thrust force for the last lamina, which experience the most damage. The linear elastic fracture mechanics (LEFM), the classical bending plate theory (CPT) and the theory of elastic behavior of composite lamina are taken into consideration for the proposed analytical model because numerical prediction greatly depends on material properties and the nature of force as well. In the current research, the mathematical equation is proposed based on assumption of combined loading of drill tip and chisel edges for the elliptical delaminated area. The Mode-I interlaminar fracture toughness of unidirectional CFRP (CTC1-FUD160/CT-E556) is experimented with as per ASTM D5528 for better experimental substantiation of the proposed model. When the outcomes of the proposed model are compared with the experiment results and available literature as well, a plausible relationship between the suggested analytical model and the experimental results is found. The result also reveals that the contribution of the drill tip is more profound than the chisel edges of drill bit in drilling operations.

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Section: Methodsmentioning

confidence: 99%

Critical thrust force prediction in unidirectional CFRP drilling: An analytical modeling approach

Patel,

Chaudhary

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…After completing the previous five stages, this stage is the final stage of this research, which aims to test the effectiveness of Muthola'ah learning using the textbooks that have been developed. The effectiveness test will be carried out with the T-test, the paired sample test (Yavuz & Utku, 2021). However, before carrying out this test, a homogeneity test will be carried out, which functions to analyze whether the data is homogeneous, and a normality test will be used to analyze whether the data is normally distributed.…”

Section: Product Trialmentioning

confidence: 99%

A New Direction of Arabic Language Teaching: Integration Muthala’ah Text Book and Religious Moderation Concept

Imron,

Abdullah,

Nurani

et al. 2024

AlTarib

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This research aims to develop religious moderation-based Muthola’ah teaching materials in textbooks and test the effectiveness of the products developed empirically in class IX of the Izzatuna Islamic Boarding School (SMP) in Palembang. This research uses a research and development design with the Borg and Gall model, which initially contained ten development steps. However, due to limitations, this research was limited to six steps that were sufficient to answer the objectives. This research was designed based on the results of an analysis of the needs of teachers (77.03%) and students (78.50%) regarding religious moderation material to implement learning while still paying attention to the socio-cultural context of society. The results of this research are a Muthola’ah textbook based on religious moderation. Its effectiveness has been tested, so this product is suitable for Muthola’ah learning and has positive implications for increasing students' understanding of religious moderation.

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“…Because of these outstanding properties, woven composites are widely applied in aerospace components. 1 For the preparation of large-size and special-shaped composite structural components, ply stacking is a very mainstream method at present. Experts and scholars have also done a lot of research on the mechanical properties of laminated composites, such as tensile behaviour, 2 flexural behaviour, 3 interlaminar behaviour, 4,5 impact behaviour 6 etc.…”

Section: Introductionmentioning

confidence: 99%

Study on tensile properties of carbon fiber/epoxy laminated woven composites with ply splicing

Fang

Chen

Wang

et al. 2022

Journal of Industrial Textiles

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Ply splicing design is a crucial technology to realize the precise manufacturing of woven composite components with various complex shapes. This paper reports two ways of splicing, inter-layer splicing, and in-plane splicing. Two factors affecting the tensile properties of carbon fiber/epoxy laminated woven composites with ply splicing are discussed, including the number of continuous fabric layers on the surface and in-plane splicing spacing. The deterioration of the composites induced during the tensile test is characterized by acoustic emission and digital image correlation. The results reveal that the damage of the laminated woven composites with ply splicing occurs mainly at the butt jointing location and leads to fracture failure. Ply splicing has little effect on the tensile modulus of the composites. The tensile modulus is slightly reduced between 2% and 5%. But ply splicing has a more significant effect on its tensile strength. The total number of continuous fabric layers at the splice position approximately determines the strength retention ratio. The more the number of continuous fabric layers on the surface are, the higher the tensile strength of the composites. When the number of continuous fabric layers on the surface is three layers, the tensile strength retention ratio reaches 69%. The larger the splicing spacing is, the better the tensile properties of the composites. When the splicing spacing is increased to 30 mm, the tensile strength retention ratio reaches 77%.

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Parametric and non-parametric tests for the evaluation of interlaminar fracture toughness of polymer composites

Cited by 8 publications

References 26 publications

Critical thrust force prediction in unidirectional CFRP drilling: An analytical modeling approach

Critical thrust force prediction in unidirectional CFRP drilling: An analytical modeling approach

A New Direction of Arabic Language Teaching: Integration Muthala’ah Text Book and Religious Moderation Concept

Study on tensile properties of carbon fiber/epoxy laminated woven composites with ply splicing

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