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Computational methods for fracture in rock: a review and recent advances

Ali JENABIDEHKORDI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2, Pages 273-287 doi: 10.1007/s11709-018-0459-5

Abstract: We present an overview of the most popular state-of-the-art computational methods available for modelling fracture in rock. The summarized numerical methods can be classified into three categories: Continuum Based Methods, Discrete Crack Approaches, and Block-Based Methods. We will not only provide an extensive review of those methods which can be found elsewhere but particularly address their potential in modelling fracture in rock mechanics and geotechnical engineering. In this context, we will discuss their key applications, assumptions, and limitations. Furthermore, we also address ‘general’ difficulties that may arise for simulating fracture in rock and fractured rock. This review will conclude with some final remarks and future challenges.

Keywords： numerical modelling method development rock mechanics fractured rock rock fracturing

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Recent development in biogeotechnology and its engineering applications

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5, Pages 1073-1096 doi: 10.1007/s11709-021-0758-0

Abstract: Many new innovative soil improvement methods have been developed in recent years based on this approach

Keywords： biogeotechnology biocementation bioclogging biogas strength enhancement liquefaction mitigation seepage control

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Recent development of vibration utilization engineering

WEN Bangchun

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1, Pages 1-9 doi: 10.1007/s11465-008-0017-2

Abstract: The utilization of vibration and wave, which was developed during the latter half of the 20th century, is one of the most valueable technology applications and has been rapidly developing recently . Because the technique is closely associated with industry and agriculture, it can create huge social and economical benefits and provide excellent services for society. Thus, due to its necessity in industry and daily life, extensive research has been devoted to vibration utillization engineering. In this paper, vibration utilization is classified into linear or non-linear vibrations, waves, and electric-magnetic oscillations. Their phenomena, patterns, and applications in nature and society are introduced. Some research results about vibration utilization engineering are described.

Keywords： utilization engineering non-linear vibration vibration utillization utillization engineering

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Critical review of recent development in fiber reinforced adobe bricks for sustainable construction

Mahgoub M. SALIH, Adelaja I. OSOFERO, Mohammed S. IMBABI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 4, Pages 839-854 doi: 10.1007/s11709-020-0630-7

Abstract: This paper presents a state-of-the-art review of research on the utilization of fibers (predominantly derived from waste materials) as reinforcement in adobe brick production. Recycling of these wastes provides sustainable construction materials and helps to protect the environment. Specimen preparation and test procedures are outlined. The effects of addition of these wastes on the physical and mechanical properties of adobe bricks as presented in the literature, are investigated. The main results for each additive are presented and discussed. It is concluded that improved adobe brick properties can be expected with the addition of combination of waste additives. The use of waste materials in the construction industry is generally of interest and useful for engineers and designers seeking sustainable solutions in construction. It is also of interest to researchers actively seeking to develop methodical approaches to quantifying, optimising and testing the performance in use of such waste material additives.

Keywords： adobe bricks fibre reinforced bricks green sustainable building material physical and mechanical properties

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Recent development on statistical methods for personalized medicine discovery

Yingqi Zhao, Donglin Zeng

Frontiers of Medicine 2013, Volume 7, Issue 1, Pages 102-110 doi: 10.1007/s11684-013-0245-7

Abstract:

It is well documented that patients can show significant heterogeneous responses to treatments so the best treatment strategies may require adaptation over individuals and time. Recently, a number of new statistical methods have been developed to tackle the important problem of estimating personalized treatment rules using single-stage or multiple-stage clinical data. In this paper, we provide an overview of these methods and list a number of challenges.

Keywords： dynamic treatment regimes personalized medicine reinforcement learning Q-learning

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Recent development on innovation design of reconfigurable mechanisms in China

Wuxiang ZHANG, Shengnan LU, Xilun DING

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 1, Pages 15-20 doi: 10.1007/s11465-018-0517-7

Abstract: This paper presents an overview of recent developments in innovation design of reconfigurable mechanismsThe future development trends are analyzed and forecasted.

Keywords： innovation design reconfigurable mechanisms metamorphic mechanisms origami-derived mechanisms development

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Recent research and development of PLGA/PLA microspheres/nanoparticles: A review in scientific and industrial

Feng Qi, Jie Wu, Hao Li, Guanghui Ma

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 1, Pages 14-27 doi: 10.1007/s11705-018-1729-4

Abstract: There have been 15 products available on the US market, but the system still has many problems during developmentIn this review, we present some recent achievement of the PLGA/PLA microspheres/nanoparticles, and discussThe review provides an overview on the development of the system in pharmaceutical industry.

Keywords： PLGA microspheres drug delivery system stability manufacturing

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Lv Jian: Recent Development of Additive Manufacturing of Nanomaterials and 4D Printing Structures（2019

吕坚(院士)

20 Jan 2021

Keywords：医学

Recent development and application of thin-film thermoelectric cooler

Yuedong Yu, Wei Zhu, Xixia Kong, Yaling Wang, Pengcheng Zhu, Yuan Deng

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4, Pages 492-503 doi: 10.1007/s11705-019-1829-9

Abstract: Recently, the performance and fabrication of thin-film thermoelectric materials have been largely enhanced. Based on this enhancement, the thin-film thermoelectric cooler (TEC) is becoming a research hot topic, due to its high cooling flux and microchip level size. To fulfill a thin-film TEC, interfacial problems are unavoidable, as they may largely reduce the properties of a thin-film TEC. Moreover, the architecture of a thin-film TEC should also be properly designed. In this review, we introduced the enhancement of thermoelectric properties of (Bi,Sb) (Te,Se) solid solution materials by chemical vapor deposition, physical vapor deposition and electrodeposition. Then, the interfacial problems, including contact resistance, interfacial diffusion and thermal contact resistance, were discussed. Furthermore, the design, fabrication, as well as the performance of thin-film TECs were summarized.

Keywords： thin-film thermoelectric cooler interfaces cooling flux TE device fabrication

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The Recent Development Situation of New Energy Resources

Liu Guangzhi

Strategic Study of CAE 2003, Volume 5, Issue 7, Pages 29-32

Abstract:

The present situation of new energy resources at home and abroad is briefly introduced and the development

Keywords： new energy resources bio-diesel hydrogen energy fuel cell

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Recent Progress in Surface Integrity Research and Development

Fengzhou Fang, Chunyang Gu, Ran Hao, Kaiyuan You, Siyu Huang

Engineering 2018, Volume 4, Issue 6, Pages 754-758 doi: 10.1016/j.eng.2018.11.005

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Review and Prospect of Mechanics of Jointed Rock Masses and Its Applications

Xie Heping

Strategic Study of CAE 2003, Volume 5, Issue 3, Pages 31-38

Abstract: Aimed at the practical problems in mining engineering, this paper reviews the recent developments inMoreover, a development tendency of mechanics of rock masses, i. e.

Keywords： mechanics of jointed rock masses recent development prospect

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Recent development in low-constraint fracture toughness testing for structural integrity assessment of

Jidong KANG, James A. GIANETTO, William R. TYSON

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 4, Pages 546-553 doi: 10.1007/s11465-018-0501-2

Abstract: In this review, we present recent developments in low-constraint fracture toughness testing, specificallyWe focus our review on the test procedure development and automation, round-robin test results and some

Keywords： fracture toughness constraint effect single-edge-notched tension test pipeline structural integrity assessment

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Surface modification techniques of membranes to improve their antifouling characteristics: recent advancements

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12, Pages 1837-1865 doi: 10.1007/s11705-023-2347-3

Abstract: Surface modification techniques of membranes to improve their antifouling characteristics: recent advancements

Keywords： Surface modification techniques

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An overview and recent advances in electrocatalysts for direct seawater splitting

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 6, Pages 1408-1426 doi: 10.1007/s11705-021-2102-6

Abstract: The development of earth-abundant electrocatalysts toward direct seawater splitting has emerged as aThe perspectives of improved electrocatalysts to solve emerging challenges and further development of

Keywords： seawater splitting electrocatalysts oxygen evolution reaction hydrogen evolution reaction chlorine chemistry