Applied Composite Materials最新文献

Environmental Durability of Composite Materials and Structures: A Collection of Applied Composite Materials 复合材料和结构的环境耐久性：应用复合材料的集合

IF 2.9 4区材料科学

Applied Composite Materials Pub Date : 2025-09-18 DOI: 10.1007/s10443-025-10378-6

Yucheng Zhong, Guangyong Sun, Vincenzo Fiore

引用次数: 0

Analysis of long-term Stability and Microwave Electromagnetic Interference Shielding Effectiveness of Epoxy MWCNT/Cu@C Nanocomposites after Hydrothermal Ageing in Saline Water 环氧MWCNT/Cu@C纳米复合材料盐水热老化后的长期稳定性及屏蔽微波电磁干扰性能分析

IF 2.9 4区材料科学

Applied Composite Materials Pub Date : 2025-08-30 DOI: 10.1007/s10443-025-10371-z

Dzmitry Tsyhanok, Jan Macutkevic, Darya Meisak, Juras Banys, Algirdas Selskis, Alisa Sabalina, Miks Bleija, Oskars Platnieks, Sergejs Gaidukovs

{"title":"Analysis of long-term Stability and Microwave Electromagnetic Interference Shielding Effectiveness of Epoxy MWCNT/Cu@C Nanocomposites after Hydrothermal Ageing in Saline Water","authors":"Dzmitry Tsyhanok, Jan Macutkevic, Darya Meisak, Juras Banys, Algirdas Selskis, Alisa Sabalina, Miks Bleija, Oskars Platnieks, Sergejs Gaidukovs","doi":"10.1007/s10443-025-10371-z","DOIUrl":"10.1007/s10443-025-10371-z","url":null,"abstract":"<div><p>The long-term electromagnetic interference shielding performance of hybrid epoxy nanocomposites was investigated after sustained hydrothermal ageing. Epoxy matrices were co-filled with multi-walled carbon nanotubes (MWCNTs, 0.05–1 vol%) and carbon-coated copper nanoparticles (Cu@C, 5 vol%) and then immersed in a 0.1 wt% NaCl solution at 80 °C for 1000 h. Gravimetric analysis revealed a maximum mass uptake of about 1 wt%, followed by partial leaching of low-molar-mass species. Ageing induced a one-order-of-magnitude rise in room-temperature conductivity (up to 0.21 S m⁻¹) and a sixfold increase in effective permittivity (ε′ ≈ 1100 at 0.573 kHz). During a single heating–cooling cycle to 500 K, the electrical conductivity showed almost the exact same behaviour as seen in non-aged composites, indicating low to no effect of hydrothermal ageing on structural relaxation or thermally activated epoxy-filler interactions. Across the 26–37 GHz Ka-band, total shielding effectiveness (SE<sub>T</sub>) remained 4–9 dB with absorption (up to 0.67) dominating over reflection. A slight (< 2 dB) enhancement in the low-frequency range of Ka-band was recorded. The combination of a resilient microstructure and stable EMI performance shows that MWCNT/Cu@C/Epoxy hybrids offer durable, hydrothermally stable shielding, which is ideal for humid or saline conditions in marine or aircraft settings, especially for radar-related systems.</p></div>","PeriodicalId":468,"journal":{"name":"Applied Composite Materials","volume":"32 5","pages":"2051 - 2065"},"PeriodicalIF":2.9,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145184064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Water Durability of 3D-Printed PEEK and PEEK Carbon Fiber Composites 3d打印PEEK和PEEK碳纤维复合材料的水耐久性

IF 2.9 4区材料科学

Applied Composite Materials Pub Date : 2025-07-30 DOI: 10.1007/s10443-025-10364-y

Caleb Nashner, David Liao, Calvin Smith, David Fedor, Lena Roberts, Joel Galos

{"title":"Water Durability of 3D-Printed PEEK and PEEK Carbon Fiber Composites","authors":"Caleb Nashner, David Liao, Calvin Smith, David Fedor, Lena Roberts, Joel Galos","doi":"10.1007/s10443-025-10364-y","DOIUrl":"10.1007/s10443-025-10364-y","url":null,"abstract":"<div><p>This study investigates the water absorption behavior of 3D-printed amorphous PEEK and short carbon fiber-reinforced PEEK (PEEK-CF) produced via fused deposition modeling. Water uptake was measured in distilled and seawater over extended exposure (~1125 h). PEEK-CF samples in seawater exhibited the highest absorption by mass (~6% increase), while PEEK and PEEK-CF in distilled water reached ~4% increase by mass, and PEEK in seawater reached ~4% increase by mass. The elevated water uptake observed in PEEK-CF compared with unreinforced PEEK is attributed to osmotic pressure and voids at the fiber-matrix interface. Diffusion behavior of the amorphous PEEK and PEEK-CF deviated from Fickian kinetics and followed the Vas-power model (modified Lucas-Washburn equation) more closely. Moisture exposure had a notable impact on mechanical properties: PEEK-CF showed up to a 32% reduction in tensile modulus, whereas the mechanical properties of unreinforced amorphous PEEK remained largely unaffected by water absorption. A modified rule of mixtures incorporating knockdown factors for water uptake, fiber length, and orientation accurately predicted the observed mechanical degradation. These findings underscore the need to consider moisture effects when designing with 3D-printed PEEK-CF composites.</p></div>","PeriodicalId":468,"journal":{"name":"Applied Composite Materials","volume":"32 5","pages":"2177 - 2192"},"PeriodicalIF":2.9,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145184175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of PA66 Nanofibrous Interlayers on Mode II Delamination Behavior of Filament-wound CFRP Laminates at Room and Cryogenic Temperatures PA66纳米纤维夹层对常温和低温下缠绕CFRP复合材料II型分层行为的影响

IF 2.9 4区材料科学

Applied Composite Materials Pub Date : 2025-06-12 DOI: 10.1007/s10443-025-10353-1

Recep Ufuk, Baris Emre Kiral, Melih Papila, Kaan Bilge

{"title":"The Effect of PA66 Nanofibrous Interlayers on Mode II Delamination Behavior of Filament-wound CFRP Laminates at Room and Cryogenic Temperatures","authors":"Recep Ufuk, Baris Emre Kiral, Melih Papila, Kaan Bilge","doi":"10.1007/s10443-025-10353-1","DOIUrl":"10.1007/s10443-025-10353-1","url":null,"abstract":"<div><p>This work aims to assess the potential of commercially available PA 6,6 nanofibrous mats when incorporated to large scale filament winding process. The conventional wet winding process was employed on a specially designed flat mandrel to manufacture uni-directional composite laminates. A49-12 K carbon fibers and cryogenic-compatible CTD 7.1 epoxy resin was employed. The winding process was temporarily paused at the mid-plane thickness to introduce a pre-crack using a 12 μm non-adherent film and to place PA66 nanofibers with an aerial weight of 3 g/m². The winding process then resumed. Laminate curing was performed in an autoclave oven for 3 h at 80<sup>o</sup>C under nitrogen environment. Flat wound laminates were then cut into end notched flexure (ENF) test samples in accordance with ASTM D7905/D7905M-19. ENF tests were performed at room temperature (RT) and cryogenic conditions in a liquid nitrogen bath. Test results suggested that mode II strain energy (G<sub>IIc</sub>) of interlayered laminates were 35% higher than the one of neat laminates when tested at room temperature. On the contrary, addition of polymeric nanofibrous interlayers reduced G<sub>IIc</sub> by 40% in cryogenic conditions. Fractographic analysis suggested that the improvement at RT was primarily due to (i) toughening at the resin rich pockets inherent by the tow-undulation effect in wet winding (ii) crack deflection in irregular tow-tow interfaces. The reduction in G<sub>IIc</sub> was attributed to synchrony of several factors, namely dominance of fiber/matrix debonding due to thermal contraction at fiber/resin interfaces, elevated brittleness of the polymeric nanofibers and pre-mature cracking due to nanofiber/resin debonding.</p></div>","PeriodicalId":468,"journal":{"name":"Applied Composite Materials","volume":"32 5","pages":"2143 - 2155"},"PeriodicalIF":2.9,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145184060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inverse Analysis for Determining Curing Phenomenon in Composite Thermosetting Polymers 测定复合热固性聚合物固化现象的逆分析

IF 2.9 4区材料科学

Applied Composite Materials Pub Date : 2025-06-05 DOI: 10.1007/s10443-025-10352-2

Bilen Emek Abali, Reza Afshar, Christos Athanasopoulos, Francisco Penayo

引用次数: 0

A Multi-Industry Perspective to Composite Repairs 复合材料维修的多行业视角

IF 2.9 4区材料科学

Applied Composite Materials Pub Date : 2025-06-05 DOI: 10.1007/s10443-025-10351-3

Carineh Ghafafian, Steven Nutt

引用次数: 0

Experimental and Numerical Investigation of Mechanical and Failure Characteristics of CFRP Lap Bar by Acoustic Emission and Micro-CT 基于声发射和微ct的CFRP搭接杆力学与破坏特性试验与数值研究

IF 2.9 4区材料科学

Applied Composite Materials Pub Date : 2025-06-02 DOI: 10.1007/s10443-025-10349-x

Peng-fei Zhang, Ran Liu, Zun-xiang Wang, Shuo Liu, Shuai Qiao, Wei Zhou

{"title":"Experimental and Numerical Investigation of Mechanical and Failure Characteristics of CFRP Lap Bar by Acoustic Emission and Micro-CT","authors":"Peng-fei Zhang, Ran Liu, Zun-xiang Wang, Shuo Liu, Shuai Qiao, Wei Zhou","doi":"10.1007/s10443-025-10349-x","DOIUrl":"10.1007/s10443-025-10349-x","url":null,"abstract":"<div><p>Carbon Fiber Reinforced Plastic (CFRP) is particularly suitable for replacing metal materials in the safety lap bars of amusement rides due to its excellent mechanical properties and lightweight nature. To ensure the safety and dependability of the CFRP lap bar, the mechanical characteristics of the lap bar were investigated through a combination of experimental and simulation methods, and the damage behavior is analyzed using acoustic emission (AE) and X-ray micro-computed tomography (micro-CT). Simulation results revealed that the maximum principal stress of the tubular element and lap bar arm was 132.27 MPa, located at the profile alteration point beneath the lap bar arm. The damage behavior of the lap bars was investigated through an analysis of the AE signals generated during the five experimental stages. With the increase in load, a large number of signals with frequencies exceeding 300 kHz appeared, indicating irreversible damage such as fiber pull-out and matrix cracking. In addition, the number of AE signals captured by Sensor 3 corresponding to the bent portion of the lap bar arm exceeded 6,000, representing the largest proportion and indicating that the damage in this area is relatively intensive. Furthermore, the internal damage morphology was reconstructed using micro-CT. The observed damage was primarily caused by interlayer damage. The failure of the CFRP lap bar is attributable to the cumulative effect of multiple damage modes, validating the reliability of the damage mode characterized by AE signals. Eventually, the damage evolution mechanism of the CFRP lap bar was clarified, providing a basis for design optimization and service evaluation.</p></div>","PeriodicalId":468,"journal":{"name":"Applied Composite Materials","volume":"32 4","pages":"1809 - 1833"},"PeriodicalIF":2.9,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating the Failure Behavior of Over-molded Thermoplastic Composites: Experimental Testing and Numerical Modelling 研究过模热塑性复合材料的失效行为：实验测试和数值模拟

IF 2.9 4区材料科学

Applied Composite Materials Pub Date : 2025-05-31 DOI: 10.1007/s10443-025-10346-0

Anandakumar Paramasivam

{"title":"Investigating the Failure Behavior of Over-molded Thermoplastic Composites: Experimental Testing and Numerical Modelling","authors":"Anandakumar Paramasivam","doi":"10.1007/s10443-025-10346-0","DOIUrl":"10.1007/s10443-025-10346-0","url":null,"abstract":"<div><p>Over-molded composites are produced by injecting short fiber composites over continuous fiber-reinforced composite inserts through an injection molding process. These composites are suitable for load bearing structural applications because of their high specific strength, stiffness, lightweight nature, and the ability to form complex structures through simple manufacturing processes. However, their performance is highly dependent on the interface adhesion between the short and continuous fiber-reinforced composite inserts. This study investigates the effect of preheating on the load bearing capacity of over-molded composites under tensile and flexural loads using experimental and numerical approaches. The damage mechanism of the over-molded composites is characterized using Hashin and cohesive zone failure criteria within ABAQUS/Explicit to capture the failure mechanisms. The experimental results revealed that preheated over-molded composites demonstrated a significant increase in tensile and flexural properties compared to non-preheated composites. For the non-preheated specimens, the primary failure mechanisms were interfacial debonding, insert delamination, and short fiber composite failure. Conversely, in the preheated specimens, both short and continuous fibers experienced simultaneous damage, owing to the strong cohesive bond formed by preheating. The predicted numerical results align well with the experimental results in terms of load-displacement behavior, strength, and damage morphologies, suggesting that the numerical simulation is a valuable tool for assessing the performance of over-molded composites.</p></div>","PeriodicalId":468,"journal":{"name":"Applied Composite Materials","volume":"32 4","pages":"1659 - 1687"},"PeriodicalIF":2.9,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal Performance of Energy Storage Sandwich Composites Containing Lithium-Ion Polymer Batteries 锂离子聚合物储能夹层复合材料电池的热性能研究

IF 2.9 4区材料科学

Applied Composite Materials Pub Date : 2025-05-29 DOI: 10.1007/s10443-025-10347-z

Koranat Pattarakunnan, Joel L. Galos, Raj Das, Adam S. Best, Ilias L. Kyratzis

引用次数: 0

Progressive Fatigue Damage Modeling of Laminated Polymer Composites Under Cyclic Stress at Elevated Temperatures Using a Novel Equivalent Cycle Number Approach 基于等效循环数方法的高温循环应力下层合聚合物复合材料渐进疲劳损伤建模

IF 2.9 4区材料科学

Applied Composite Materials Pub Date : 2025-05-26 DOI: 10.1007/s10443-025-10335-3

M. R. Khatami-Ghazvini, M. Haghighi-Yazdi, M. M. Shokrieh

{"title":"Progressive Fatigue Damage Modeling of Laminated Polymer Composites Under Cyclic Stress at Elevated Temperatures Using a Novel Equivalent Cycle Number Approach","authors":"M. R. Khatami-Ghazvini, M. Haghighi-Yazdi, M. M. Shokrieh","doi":"10.1007/s10443-025-10335-3","DOIUrl":"10.1007/s10443-025-10335-3","url":null,"abstract":"<div><p>The <i>progressive fatigue damage</i> (PFD) model effectively simulates the fatigue behavior of laminated composites under multiaxial cyclic stress. This model employs the <i>generalized material property degradation</i> (GMD) technique to calculate the residual properties of <i>unidirectional</i> (UD) plies subjected to cyclic stress. The present study enhances the PFD model to simulate the fatigue behavior of <i>polymer matrix composite</i> (PMC) materials under cyclic stress at various temperatures by executing it at a single temperature. The <i>equivalent cycle time</i> (ECT) method evaluates property changes in PMCs across different temperature settings, utilizing data from isothermal loading. In the present study, a novel approach based on the ECT concept, termed <i>equivalent cycle number</i> (ECN), is developed and integrated into the GMD technique. Additionally, a combined fatigue life model is employed to improve the predictive capability of the PFD model. This model is constructed by evaluating the results of three commonly used fatigue life models in predicting the fatigue life of UD plies under uniaxial cyclic stress at both room and elevated temperatures. The proposed PFD model effectively predicts the residual properties and fatigue life of a PMC subjected to multiaxial cyclic stress at two distinct temperatures. The findings demonstrate that the ECN method significantly reduces the model's computing load while maintaining a high level of predictive capability compared to available experimental data. Furthermore, the results indicate that using the combined fatigue life model substantially enhances the predictive capability of the PFD model.</p></div>","PeriodicalId":468,"journal":{"name":"Applied Composite Materials","volume":"32 4","pages":"1717 - 1753"},"PeriodicalIF":2.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145169879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0