Advances in Materials Research-An International Journal最新文献_第2页

Continuously inhomogeneous beam with longitudinal vertical cracks: an analytical investigation 具有纵向裂缝的连续非均匀梁:一种分析研究

IF 2.2

Advances in Materials Research-An International Journal Pub Date : 2021-01-01 DOI: 10.12989/AMR.2021.10.2.149

V. Ri̇zov

{"title":"Continuously inhomogeneous beam with longitudinal vertical cracks: an analytical investigation","authors":"V. Ri̇zov","doi":"10.12989/AMR.2021.10.2.149","DOIUrl":"https://doi.org/10.12989/AMR.2021.10.2.149","url":null,"abstract":". The present paper is concerned with fracture analysis of an inhomogeneous beam with three longitudinal vertical parallel cracks. The three cracks are located symmetrically with respect to the mid-span. A notch is cut-out in the lateral surface of the beam in the mid-span. Only half of the beam is considered due to the symmetry. The material is continuously inhomogeneous in the width direction of the beam. Besides, the material exhibits non-linear elastic mechanical behavior. The three cracks are located arbitrary in the width direction so as the cross-sections of the four crack arms have different width. The longitudinal fracture behavior is studied in terms of the strain energy release rate. Three solutions to the strain energy release rate are derived by differentiating the complementary strain energy with respect to the areas of the three cracks. The strain energy release rate is determined also by analyzing the balance of the energy for verification. Further verifications are carried-out by applying the J -integral approach. The influences of the locations of the three cracks, the material inhomogeneity and the beam geometry on the longitudinal fracture behavior are appraised. Results of analyses of a beam that is continuously inhomogeneous in both width and length directions are also presented.","PeriodicalId":46242,"journal":{"name":"Advances in Materials Research-An International Journal","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66389692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advances in Materials Research: Select Proceedings of ICAMR 2019 材料研究进展:ICAMR 2019选集

IF 2.2

Advances in Materials Research-An International Journal Pub Date : 2021-01-01 DOI: 10.1007/978-981-15-8319-3

引用次数: 1

New solution for damaged porous RC cantilever beams strengthening by composite plate 复合板加固损伤多孔混凝土悬臂梁的新方案

IF 2.2

Advances in Materials Research-An International Journal Pub Date : 2021-01-01 DOI: 10.12989/AMR.2021.10.3.169

Rabahi Abderezak, T. H. Daouadji, Benferhat Rabia

引用次数: 1

Development of Cobalt coated MWCNTs/Polyurethane composite for microwave absorption 微波吸收用钴包覆MWCNTs/聚氨酯复合材料的研制

IF 2.2

Advances in Materials Research-An International Journal Pub Date : 2021-01-01 DOI: 10.12989/AMR.2021.10.3.195

Navdeep Singh, Gagan Deep Aul

{"title":"Development of Cobalt coated MWCNTs/Polyurethane composite for microwave absorption","authors":"Navdeep Singh, Gagan Deep Aul","doi":"10.12989/AMR.2021.10.3.195","DOIUrl":"https://doi.org/10.12989/AMR.2021.10.3.195","url":null,"abstract":"This research work describes the design and method of development of microwave absorber and was conducted for analysis of reflection loss performance with the magnetic modifications of Multi-Walled Carbon Nanotubes (MWCNTs). Cobalt coated Multi-Walled Carbon Nanotubes composites were prepared by three step methods. Composites were developed with varying weight percentage of Cobalt (II) Chloride Hexahydrate and Multi-Walled Carbon Nanotubes. The morphology, elementary analysis and absorbing properties of Cobalt coated Multi-Walled Carbon Nanotubes composites were studied by FESEM, EDX and Vector Network Analyzer. The obtained Co coated MWCNTs/PU composite demonstrated the maximum reflection loss of -21.06 dB at 12.63 GHz and the maximum absorption bandwidth of 3.7 GHz, in the frequency range of 8-13 GHz with 3 mm thickness. These microwave absorption parameters can be credited to synergistic effect of improved matched impedance and greater microwave attenuation properties of the absorber. The combined usage of dielectric loss and magnetic loss absorber design shows great diversity and can be a promising candidate for designing high performance microwave absorbing materials.","PeriodicalId":46242,"journal":{"name":"Advances in Materials Research-An International Journal","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66389366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Numerical study of reinforced natural slope by retaining wall with prestressed anchor 预应力锚杆挡土墙加固天然边坡的数值研究

IF 2.2

Advances in Materials Research-An International Journal Pub Date : 2021-01-01 DOI: 10.12989/AMR.2021.10.2.099

N. Said, Nechnech Amar

引用次数: 0

Bending and free vibration analysis for FGM plates containing various distribution shape of porosity 含不同孔隙率分布形状的FGM板的弯曲和自由振动分析

IF 2.2

Advances in Materials Research-An International Journal Pub Date : 2021-01-01 DOI: 10.12989/AMR.2021.10.2.115

L. Hadji, F. Bernard, A. Safa, A. Tounsi

引用次数: 7

Experimental and numerical prediction of the weakened zone of a ceramic bonded to a metal 陶瓷与金属结合弱化区的实验和数值预测

IF 2.2

Advances in Materials Research-An International Journal Pub Date : 2020-12-01 DOI: 10.12989/AMR.2019.8.4.295

Bouchra Zaoui, Mohammed Baghdadi, B. Mechab, B. Serier, M. Belhouari

引用次数: 0

Flexural analysis of thermally actuated fiber reinforced shape memory polymer composite 热致动纤维增强形状记忆聚合物复合材料的弯曲分析

IF 2.2

Advances in Materials Research-An International Journal Pub Date : 2020-12-01 DOI: 10.12989/AMR.2019.8.4.337

N. Tiwari, A. Shaikh

{"title":"Flexural analysis of thermally actuated fiber reinforced shape memory polymer composite","authors":"N. Tiwari, A. Shaikh","doi":"10.12989/AMR.2019.8.4.337","DOIUrl":"https://doi.org/10.12989/AMR.2019.8.4.337","url":null,"abstract":"Shape Memory Polymer Composites (SMPC) have gained popularity over the last few decades due to its flexible shape memory behaviour over wide range of strains and temperatures. In this paper, non-linear bending analysis has been carried out for SMPC beam under the application of uniformly distributed transverse load (UDL). Simplified C0 continuity Finite Element Method (FEM) based on Higher Order Shear Deformation Theory (HSDT) has been adopted for flexural analysis of SMPC. The numerical solutions are obtained by iterative Newton Raphson method. Material properties of SMPC with Shape Memory Polymer (SMP) as matrix and carbon fibre as reinforcements, have been calculated by theory of volume averaging. Effect of temperature on SMPC has been evaluated for numerous parameters for instance number of layers, aspect ratio, boundary conditions, volume fraction of carbon fiber and laminate stacking orientation. Moreover, deflection profile over unit length and behavior of stresses across thickness are also presented to elaborate the effect of glass transition temperature (Tg). Present study provides detailed explanation on effect of different parameters on the bending of SMPC beam for large strain over a broad span of temperature from 273-373K, which encompasses glass transition region of SMPC.","PeriodicalId":46242,"journal":{"name":"Advances in Materials Research-An International Journal","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45244748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Flexoelectric effects on dynamic response characteristics of nonlocal piezoelectric material beam 挠曲电效应对非局部压电材料梁动力响应特性的影响

IF 2.2

Advances in Materials Research-An International Journal Pub Date : 2020-12-01 DOI: 10.12989/AMR.2019.8.4.259

L. A. Kunbar, Basim Mohamed Alkadhimi, H. S. Radhi, Nadhim M. Faleh

引用次数: 2

Synthesis and characterization of α-mangostin imprinted polymers and its application for solid phase extraction α-芒果苷印迹聚合物的合成、表征及其在固相萃取中的应用

IF 2.2

Advances in Materials Research-An International Journal Pub Date : 2020-12-01 DOI: 10.12989/AMR.2020.9.4.251

N. Zakia, M. A. Zulfikar, M. B. Amran

{"title":"Synthesis and characterization of α-mangostin imprinted polymers and its application for solid phase extraction","authors":"N. Zakia, M. A. Zulfikar, M. B. Amran","doi":"10.12989/AMR.2020.9.4.251","DOIUrl":"https://doi.org/10.12989/AMR.2020.9.4.251","url":null,"abstract":"α-mangostin imprinted polymers have been synthesized by a non-covalent imprinting approach with α-mangostin as a template molecule. The α-mangostin molecularly imprinted polymers (MIPs) prepared by radical polymerization using methacrylic acid, ethlylene glycol dimethacrylate, benzoyl peroxide, and acetonitrile, as a monomer, crosslinker, initiator, and porogen, respectively. The template was removed by using methanol:acetic acid 90:10 (v/v). The physical characteristics of the polymers were investigated by Fourier Transform Infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). The rebinding studies were carried out by batch methods. The results exhibited that the MIPs was able to adsorb the α-mangostin at pH 2 and the contact time of 180 min. The kinetic adsorption data of α-mangostin performed the pseudo-second order model and followed the Langmuir isotherm model with the adsorption capacity of 16.19 mg.g-1. MIPs applied as a sorbent material in solid-phase extraction, namely molecularly imprinted solid-phase extraction (MISPE) and it shows the ability for enrichment and clean-up of α-mangostin from the complex matrix in medicinal herbal product and crude extract of mangosteen (Garcinia mangostana L.) pericarp. Both samples, respectively, which were spiked with α-mangostin gives recovery more than 90% after through by MISPE in all concentration ranges.","PeriodicalId":46242,"journal":{"name":"Advances in Materials Research-An International Journal","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49571255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1