This work investigates the dynamic impact response of tubular composite structures with/without honeycomb sandwich core under transverse low-velocity impact (LVI) and compression after impact (CAI) test. Damage mechanisms, such as matrix cracking, delamination and fiber breakage/rupture in face sheets as well as honeycomb crushing and buckling in the core, are characterized by X-ray micro-computed tomography (μCT) to understand failure processes and their relationship with core material and impactor shape. It is found that sandwich core material helps to absorb impact energy and resist localized damage formation. The benefit of core material includes greater energy absorption capability and higher specific CAI strength. The progressive damage events from damage initiation, failure propagation to final collapse of a tubular composite structure during CAI test are also further discussed.

Low-velocity impact response and compression after impact behavior of tubular composite sandwich structures

Experimental and numerical investigations on the dynamic response of woven carbon fiber reinforced thick composite laminates under low-velocity impact

The metal hybrid method can effectively solve the problem of low energy absorption efficiency of CFRP under lateral crushing load, and the application prospect of the hybrid tube can be better explored through the related crashworthiness design. Therefore, the CFRP/AL hybrid circular tube parameters were analyzed in this paper and propose single, antisymmetric, and hybrid wrapping methods (Sap, Aap, and Hap). Based on the nonlinear progressive damage theory, the finite element model is established, considering intra- and inter-ply damage. The results show that the calculated results of the FE model are basically consistent with the experimental data, and can accurately capture the failure mode in the actual collapse. Increasing the wrapping angle can significantly improve the energy absorption of the CFRP/AL hybrid tube, with 40° antisymmetric wrapping (Aap-40) being the best, which can increase the specific energy absorption (SEA) by 54% compared with the initial hybrid tube. Finally, the parameters of the AL tube were studied, and the energy absorption mechanism of hybrid tubes with different thickness of the AL tube was revealed. 

Crashworthiness design of CFRP/AL hybrid circular tube under lateral crushing

As the effects of climate change become more apparent, it is necessary that environmental impact is considered in every aspect of our society, including the design of new infrastructure. The use of...

Experiments and nonlinear analysis of the impact behaviour of sandwich panels constructed with flax fibre-reinforced polymer faces and foam cores:

Probability-based unified sensitivity analysis for multi-objective performances of composite laminates: A surrogate-assisted approach

The attention of the present work is focused on the energy absorption and transformation of carbon fiber reinforced polymer (CFRP) composites under low velocity impact. Moreover, the viscoelastic behavior of composites was explored by observing the changes of dent depths via a micrometer and 3D microscope. In addition, the residual strengths of CFRP specimens were investigated by the compression after impact (CAI) test. The results show that more than 88% of impact energy was absorbed by the CFRPs through reversible deformation, irreversible damage and viscoelastic behavior. The impact damage threshold value and the maximum allowable deformation of the CFRP laminates were 9 J and about half of its thickness respectively. The energy is mainly absorbed by deformation when the impact energy was not larger than the threshold value. The energy dissipated by viscoelastic behavior increased with the increase in the impact energy and even exceeded 1.4 J in the case of 21 J, which was much higher than the kinetic energy when the impact energy exceeded the threshold value. The residual strength of the CFRP laminates was related to the energy absorbed by irreversible damage.

Exploration of energy absorption and viscoelastic behavior of CFRPs subjected to low velocity impact

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Xiaodan Li

Author Tools

Chat about Author

Papers

Exploration of energy absorption and viscoelastic behavior of CFRPs subjected to low velocity impact