関連する実験動画

Updated: Jan 27, 2026

Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process

Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process

Published on: June 30, 2023

複合材料積層板の湿熱環境下における進行性損傷モデル

Dong Zhou¹, HongJun Liu², ShengLi Lv²

¹School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China.

|January 26, 2026

Abstract:

Carbon fiber-reinforced polymer composites are used in a wide variety of applications, and the mechanical properties of these materials are degraded by hygrothermal aging. Hence, a three-dimensional progressive damage model was proposed in this study to help predict the failure of composite structures in hygrothermal environments. Using finite element analysis software, a UMAT subroutine was developed that can predict and analyze the failure mode and damage evolution of composite structures in hygrothermal environments. To verify the performance of the proposed model, moisture absorption and three-point bending tests were carried out on T300/5208 composite specimens exposed to hygrothermal conditions (70 °C and 85% RH) for different durations. The results showed that the saturated moisture absorption rate was approximately 0.56%, and the hygrothermal effects reduced the flexural strength of the T300/5208 composite laminate by 10.3%. Finally, the cross-section and fracture morphology were observed by digital microscope and field emission scanning electron microscope (FSEM), and the mechanism of hygrothermal aging was analyzed.

キーワード:

進行性損傷モデリング複合材料湿熱環境炭素繊維強化ポリマー破壊力学材料劣化

さらに関連する動画

Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates

Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates

Published on: April 27, 2019

Experimental Implementation of a New Composite Fabrication Method: Exposing Bare Fibers on the Composite Surface by the Soft Layer Method

Experimental Implementation of a New Composite Fabrication Method: Exposing Bare Fibers on the Composite Surface by the Soft Layer Method

Published on: October 6, 2017

関連する概念動画

Classifying Matter by Composition

Classifying Matter by Composition

Matter: Pure Substances and Mixtures
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...

Tumor Progression

Tumor Progression

Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...

Composition of Blood

Composition of Blood

The blood in our bodies comprises three major components: blood plasma, formed elements, and the extracellular matrix. Blood plasma is a yellowish fluid that constitutes 55% of the total blood volume. It is primarily made up of water and essential substances such as electrolytes and proteins. Blood plasma serves as a medium for transporting blood cells and also contains nutrients, enzymes, hormones, antibodies, and gases.
Formed elements constitute the remaining 45% of the blood volume. These...

Composite Bodies

Composite Bodies

A composite body is a body made up of multiple parts, connected to form a larger, unified object. Each part has its own weight and center of gravity, which must be considered to determine the center of gravity of the composite body. In cases where the density or specific weight is constant, the center of gravity coincides with the centroid.
Composite bodies have widespread applications in mechanical engineering, from automobiles to aircraft to rockets. For example, an automobile wheel comprises...

mTOR Signaling and Cancer Progression

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...

Gene-Environment Interactions

Gene-Environment Interactions

Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...