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Experimental measurement of double-K fracture parameters of concrete with small-size aggregates

ZHANG Xiufang, XU Shilang, ZHENG Shuang

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 4,   Pages 448-457 doi: 10.1007/s11709-007-0061-8

Abstract: The double- fracture model can well describe the development of cracks undergoing during the entire fractureTherefore, it has been selected as the theoretical basis of the Norm for fracture test of

Keywords： development     concrete     theoretical     double- fracture    

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The Loading Capacity of Three Point Bending BeamWith the Resistant Force of Cohesive Crack

Wang Limin,Xu Shi ,Ren Chuanbo

Strategic Study of CAE 2007, Volume 9, Issue 2,   Pages 30-35

Abstract:

In the fracture study of softening materials,the damage area of crackforce has resistant effect on the crack extension.The stress intensity factor of crack solids is a fracturehas relationship with the values of length of cohesive crack and ultimate tension stress.Through the double-Kfracture criterion and fracture model of three point bending beam, the effect of crack cohesive forceon the fracture process is analyzed.For maximum loading of bending beam with crack,the calculation approach

Keywords： cohesive crack     three point bending beam     concrete     double唱K fracture parameters     structureloading capacity    

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The Double-K Fracture Parameter of Concrete for Non-Standard Three Point Bending Beam Specimens

Wu Zhimin,Xu Shilang,Ding Yining,Lu Xijing,Liu Jiayi,Ding Sheng gen

Strategic Study of CAE 2001, Volume 3, Issue 4,   Pages 76-81

Abstract: On this basis, the initiation fracture toughness KiniIC, unstable fracture toughnessKunIC and the critical crack tip opening displacement CTODc for theThe calculated results show that KunIC is independent of the initial crack lengthMeanwhile, KiniIC is size-independent too, when a0/h = 0.3〜0.5.This indicates that the double-K fracture parameter can be considered as a constant for concrete materials

Keywords： concrete     three-point bending beam     fracture parameter    

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Enhancement of distillate output of double basin solar still with vacuum tubes

Hitesh N PANCHAL, P K SHAH

Frontiers in Energy 2014, Volume 8, Issue 1,   Pages 101-109 doi: 10.1007/s11708-014-0299-5

Abstract: The performance of the double basin solar still was also increased by attaching vacuum tubes to the lowerThis paper proposed a novel approach to increase the distillate output of the double basin solar still

Keywords： double basin solar still     calcium stones     pebbles     granite gravel     distillate output    

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Latest development of double perovskite electrode materials for solid oxide fuel cells: a review

Shammya AFROZE, AfizulHakem KARIM, Quentin CHEOK, Sten ERIKSSON, Abul K. AZAD

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 770-797 doi: 10.1007/s11708-019-0651-x

Abstract: The present review focuses on the various aspects pertaining to a potential electrode material, the double

Keywords： double perovskites     electrode materials     hydrocarbon fuel     solid oxide fuel cells    

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Effects of process parameters on surface roughness in abrasive waterjet cutting of aluminium

K. SACHIDANANDA

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 4,   Pages 439-444 doi: 10.1007/s11465-012-0337-0

Abstract: This paper shows the influence of process parameters on surface roughness (Ra) which is anThe effects of these parameters on surface roughness have been studied based on the experimental results

Keywords： abrasive waterjet     aluminium     garnet     water pressure     mass flow rate     traverse speed     standoff distance    

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A toughness based deformation limit for X- and K-joints under brace axial tension

Bo GU,Xudong QIAN,Aziz AHMED

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 3,   Pages 345-362 doi: 10.1007/s11709-016-0333-2

Abstract: This study reports a deformation limit for the initiation of ductile fracture failure in fatigue-crackedcircular hollow section (CHS) X- and K-joints subjected to brace axial tension.driving force in a fatigue crack at the hot-spot location in the tubular joint reaches the material fracturetoughness measured from standard fracture specimens.the deformation limit includes a normalization procedure, which covers a wide range of the geometric parameters

Keywords： circular hollow section (CHS)     tubular joint     fracture failure     deformation limit     J-integral    

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Multi-objective optimization of process parameters in Electro-Discharge Diamond Face Grinding based on

Ravindra Nath YADAV, Vinod YADAVA, G.K. SINGH

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 3,   Pages 319-332 doi: 10.1007/s11465-013-0269-3

Abstract: In this study, ANN has been used for modeling while NSGA-II is used to optimize the control parametersDuring experimentation, the wheel speed, pulse current, pulse on-time and duty factor are taken as input parameterswhile output parameters are material removal rate (MRR) and average surface roughness (Ramodel is capable to predict the output responses within the acceptable limit for a given set of input parameters

Keywords： hybrid machining processes (HMPs)     electrical discharge diamond grinding (EDDG)     artificial neural network (ANN)     genetic algorithm     modeling and optimization    

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Degree of bending of concrete-filled rectangular hollow section K-joints under balanced-axial loadings

Rui ZHAO; Yongjian LIU; Lei JIANG; Yisheng FU; Yadong ZHAO; Xindong ZHAO

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 4,   Pages 461-477 doi: 10.1007/s11709-022-0818-0

Abstract: value should be determined to improve the accuracy of fatigue assessment for both stress-life curve and fractureno DoB parametric formula is available for concrete-filled rectangular hollow section (CFRHS) K-jointsTherefore, a robust finite element (FE) analysis was carried out to calculate the DoB of CFRHS K-jointsBased on the numerical results, design equations to predict DoBs for CFRHS K-joints were proposedInclusively, the CFRHS K-joints with same hot spot stresses, may have completely different fatigue lives

Keywords： fatigue assessment     K-joint     design equations     degree of bending     fracture mechanics    

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Exergy-energy analysis of full repowering of a steam power plant

NIKBAKHT NASERABAD,K. MOBINI,A. MEHRPANAHI,M. R. ALIGOODARZ

Frontiers in Energy 2015, Volume 9, Issue 1,   Pages 54-67 doi: 10.1007/s11708-014-0342-6

Abstract: Steam is produced by a double-pressure heat recovery steam generator (HRSG) with reheat which obtains

Keywords： full repowering     exergy analysis     V94.2 and V94.3A gas turbines     double-pressure HRSG     duct burner     Bandarabbas    

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ANN Analysis of Multi-correlation Between Forest Fire Risk and Weather Parameters

Song Weiguo,Ma Jian,Satoh K,Wang Jian

Strategic Study of CAE 2006, Volume 8, Issue 2,   Pages 61-66

Abstract: The impact of weather parameters on fire has been one of the hot spots in the forest fire study.In this paper, the effect of 5 daily weather parameters on forest fire probability is investigtated.The 5 parameters are average humidity, precipitation, average wind speed, average temperature and sunshineSecondly, the multi-correlaiton between fire probability and the 5 weather parameters is studied withis indicated from the results that there are steady correlaiton between fire probability and weather parameters

Keywords： neural network     forest fire     fire probability     weather     fire risk    

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Tests on impact effect of partial fracture at steel frame connections

CHEN Yiyi, BIAN Ruoning

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 4,   Pages 295-301 doi: 10.1007/s11709-008-0049-z

Abstract: Impact effect of sudden fracture at steel frame connections under severe earthquake or other extremeThe relation of impulse caused by structural fracture to the release of inner force at the cracked locationIt is also revealed that the instant fracture of structural connection is characterized by progressiveand partial fracture.Numerical evaluation of the impact effect of connection fracture is carried out.

Keywords： structural fracture     natural     fracture     progressive     high-frequency    

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Effect of fly ash replacement level on the fracture behavior of concrete

Mahdi AREZOUMANDI, Jeffery S. VOLZ

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 4,   Pages 411-418 doi: 10.1007/s11709-013-0228-4

Abstract: results of an experimental investigation that evaluates effect of fly ash replacement level on the fractureThis experimental program consisted of 32 fracture beams to study the fracture behavior of concrete.The experimental fracture energies were compared with the fracture energy provisions of different designevaluate whether or not there is any statistically significant difference between the experimental fracturethese statistical tests show that the mix with higher level of fly ash replacement level has higher fracture

Keywords： concrete     fracture energy     fly ash    

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Computational modeling of fracture in concrete: A review

Luthfi Muhammad Mauludin, Chahmi Oucif

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 586-598 doi: 10.1007/s11709-020-0573-z

Abstract: This paper presents a review of fracture modeling of concrete.Based on comprehensive literature review, there are two main approaches considered to-date of concrete fractureThe purpose of this review is to provide insight comparison from different techniques in modeling of fractureIn the first section, an overview of fracture modeling in general is highlighted.

Keywords： concrete fracture     macroscopic     micromechanical     heterogeneity    

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Computational modeling of fracture in capsule-based self-healing concrete: A 3D study

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1337-1346 doi: 10.1007/s11709-021-0781-1

Abstract: We present a three-dimensional (3D) numerical model to investigate complex fracture behavior using cohesivepre-inserted cohesive elements are also applied into the initial meshes of solid elements to account for fractureThe proposed model provides an effective tool for predicting the complex fracture response of capsule-based

Keywords： 3D fracture     self-healing concrete     spherical     cohesive elements     heterogeneous    

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Title Author Date Type Operation

Experimental measurement of double-K fracture parameters of concrete with small-size aggregates

ZHANG Xiufang, XU Shilang, ZHENG Shuang

Journal Article

The Loading Capacity of Three Point Bending BeamWith the Resistant Force of Cohesive Crack

Wang Limin,Xu Shi ,Ren Chuanbo

Journal Article

The Double-K Fracture Parameter of Concrete for Non-Standard Three Point Bending Beam Specimens

Wu Zhimin,Xu Shilang,Ding Yining,Lu Xijing,Liu Jiayi,Ding Sheng gen

Journal Article

Enhancement of distillate output of double basin solar still with vacuum tubes

Hitesh N PANCHAL, P K SHAH

Journal Article

Latest development of double perovskite electrode materials for solid oxide fuel cells: a review

Shammya AFROZE, AfizulHakem KARIM, Quentin CHEOK, Sten ERIKSSON, Abul K. AZAD

Journal Article

Effects of process parameters on surface roughness in abrasive waterjet cutting of aluminium

K. SACHIDANANDA

Journal Article

A toughness based deformation limit for X- and K-joints under brace axial tension

Bo GU,Xudong QIAN,Aziz AHMED

Journal Article

Multi-objective optimization of process parameters in Electro-Discharge Diamond Face Grinding based on

Ravindra Nath YADAV, Vinod YADAVA, G.K. SINGH

Journal Article

Degree of bending of concrete-filled rectangular hollow section K-joints under balanced-axial loadings

Rui ZHAO; Yongjian LIU; Lei JIANG; Yisheng FU; Yadong ZHAO; Xindong ZHAO

Journal Article

Exergy-energy analysis of full repowering of a steam power plant

NIKBAKHT NASERABAD,K. MOBINI,A. MEHRPANAHI,M. R. ALIGOODARZ

Journal Article

ANN Analysis of Multi-correlation Between Forest Fire Risk and Weather Parameters

Song Weiguo,Ma Jian,Satoh K,Wang Jian

Journal Article

Tests on impact effect of partial fracture at steel frame connections

CHEN Yiyi, BIAN Ruoning

Journal Article

Effect of fly ash replacement level on the fracture behavior of concrete

Mahdi AREZOUMANDI, Jeffery S. VOLZ

Journal Article

Computational modeling of fracture in concrete: A review

Luthfi Muhammad Mauludin, Chahmi Oucif

Journal Article

Computational modeling of fracture in capsule-based self-healing concrete: A 3D study

Journal Article