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  • Open Access


    Influence of Dowel Center Spacing on Chamfered-Joint Components Made by Cupressus funebris Wood

    Jianhua Lyu1,2,#, Jialei Wang1,2,#, Ziqiang Chen3, Ming Chen1,2,*

    Journal of Renewable Materials, Vol.11, No.1, pp. 309-319, 2023, DOI:10.32604/jrm.2022.021478

    Abstract The traditional tenon and mortise joint has low processing efficiency and a weak theoretical basis, making the structure easy to deform and damage, reducing the safety, and increasing waste of resources. This study aims to determine the optimum dowel center spacing parameter for chamfered-joint components and the maximum value of the strength of joints loaded into bending strength and tensile strength. In this study, an integrated optimization method combining the single-factor test and one-way ANOVA analysis was proposed to study the influence of the dowel center spacing on the bending strength and the tensile strength of chamfered-joint components made by… More >

  • Open Access


    An Optimized Scale-Invariant Feature Transform Using Chamfer Distance in Image Matching

    Tamara A. Al-Shurbaji1, Khalid A. AlKaabneh2, Issam Alhadid3,*, Ra’ed Masa’deh4

    Intelligent Automation & Soft Computing, Vol.31, No.2, pp. 971-985, 2022, DOI:10.32604/iasc.2022.019654

    Abstract Scale-Invariant Feature Transform is an image matching algorithm used to match objects of two images by extracting the feature points of target objects in each image. Scale-Invariant Feature Transform suffers from long processing time due to embedded calculations which reduces the overall speed of the technique. This research aims to enhance SIFT processing time by imbedding Chamfer Distance Algorithm to find the distance between image descriptors instead of using Euclidian Distance Algorithm used in SIFT. Chamfer Distance Algorithm requires less computational time than Euclidian Distance Algorithm because it selects the shortest path between any two points when the distance is… More >

  • Open Access


    Slenderness Ratio Effect on the Eccentric Compression Performance of Chamfered Laminated Bamboo Lumber Columns

    Ke Zhou1,2, Haitao Li1,2,*, Assima Dauletbek1,2, Dong Yang1,2, Zhenhua Xiong3, Rodolfo Lorenzo4, Kun Zhou5, Ileana Corbi6, Ottavia Corbi6

    Journal of Renewable Materials, Vol.10, No.1, pp. 165-182, 2022, DOI:10.32604/jrm.2021.017223

    Abstract Eccentric compression tests on 15 chamfered laminated bamboo lumber (LBL) columns with a height ranging from 600 to 3000 mm were conducted in order to study the eccentric mechanical performance. The failure of all specimens was caused by the crack of bamboo fiber in the tensile region. When the ultimate strength was reached, except specimens with a height of 600 mm, all other specimens could bear large deformation, showing good ductility. The lateral displacements of the specimens under eccentric compression were approximately parabolic in the direction of column height. The ultimate bending moment of LBL columns with different slenderness ratios… More >

  • Open Access


    Influence of the Hole Chamfer on the Characteristics of a Multi-hole Orifice Flowmeter

    Caizhe Hao1, Xiaoming Song1, *, Zhining Jia1

    FDMP-Fluid Dynamics & Materials Processing, Vol.15, No.4, pp. 391-401, 2019, DOI:10.32604/fdmp.2019.07771

    Abstract In order to analyze the influence of the hole chamfer on the metering performances of a Multi-hole Orifice Flowmeter and optimize the related orifice structure, a multi-hole orifice flowmeter with DN80 and throttle ratio of 0.45 was considered in the present study. The flow field characteristics were determined in the framework of a CFD technique. The results show that the multi-hole orifice flowmeter with filleting transition around the throttle orifice has higher accuracy in a wide range of the space of parameters, and is more suitable for accurate measurement of fluid in process control. More >

  • Open Access


    Effect of chamfered brake pad patterns & lining friction coefficients on the vibration squeal response for automotive disc brake system

    En-Cheng Liu1, Syh-Tsang Jenq1,2, Shih-Wei Kung3, Chie Gau1, Hsin-Luen Tsai4, Cheng-Ching Lee5, Yu-Der Chen5

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.9, No.4, pp. 245-246, 2009, DOI:10.3970/icces.2009.009.245

    Abstract The purpose of the present work is to study the disc brake squeal problem for passenger cars in order to reduce the instable high frequency squeal modes. The ABAQUS/Standard implicit method was used to perform dynamic contact vibration analysis of the current disc brake finite element model. The disc brake system studied here contains the caliper, bracket, brake disc, and brake pad. Notice that brake pad in general contains both brake lining and brake shoe. The brake pad with a specific chamfer pattern and the brake disc with a series of cooling ribs for ventilation were numerically constructed in the… More >

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