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Research on the dynamic mechanical characteristics and turning tool life under the conditions of excessively

Genghuang HE, Xianli LIU, Fugang YAN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 3, Pages 329-334 doi: 10.1007/s11465-012-0303-x

Abstract: The heavy-duty cutting tool was damaged in the form of a shearing fracture.

Keywords： extreme loading cutting shear flow stress dynamic cutting force fatigue fracture

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Investigation on drilling-grinding of CFRP

Yanming QUAN, Wenwang ZHONG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1, Pages 60-63 doi: 10.1007/s11465-009-0008-y

Abstract: Conventional drills have a very short life in the drilling of this kind of composites and the qualityThe effects of machining parameters, cooling and chip removal on the tool life, and the hole quality

Keywords： composites drilling-grinding cemented/plated diamond tool life machined quality

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Machinability of damage-tolerant titanium alloy in orthogonal turn-milling

Tao SUN, Lufang QIN, Junming HOU, Yucan FU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3, Pages 504-515 doi: 10.1007/s11465-020-0586-2

Abstract: However, cutting TC21 entails problems, such as high cutting temperature, high tool tip stress, rapidtool wear, and difficulty guaranteeing processing quality.life, and machining quality of TC21.The mechanism of the effect of turn-milling parameters on tool life is discussed, the relationship betweeneach parameter and tool life is analyzed, and the failure process of a TiAlN-coated tool in turn-milling

Keywords： orthogonal turn-milling damage-tolerant titanium alloy tool life and failure machined surface integrity

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Energy saving design of the machining unit of hobbing machine tool with integrated optimization

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0694-2

Abstract: The machining unit of hobbing machine tool accounts for a large portion of the energy consumption duringAn integrated optimization model for reducing tool displacement and energy consumption is developed onResults show that the energy consumption and tool displacement of the machining unit are reduced, indicating

Keywords： energy saving design energy consumption machining unit integrated optimization machine tool

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Effect of magneto rheological damper on tool vibration during hard turning

P. Sam PAUL, A. S. VARADARAJAN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 4, Pages 410-416 doi: 10.1007/s11465-012-0341-4

Abstract: The present investigation aims at developing a magneto rheological (MR) fluid damper for suppressing toolwere conducted to arrive at a set of electrical, compositional and shape parameters that can suppress toolIt was observed that the use of MR fluid damper reduces tool vibration and improves the cutting performance

Keywords： tool vibration magneto rheological damper hard turning surface finish tool wear

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A novel six-legged walking machine tool for

Jimu LIU, Yuan TIAN, Feng GAO

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3, Pages 351-364 doi: 10.1007/s11465-020-0594-2

Abstract: This study proposes a novel six-legged walking machine tool consisting of a legged mobile robot and aportable parallel kinematic machine tool.of the large workspace of the legged mobile platform and the high precision of the parallel machine toolFinally, an application scenario is shown in which the walking machine tool steps successfully over ahierarchical motion planning scheme and demonstrate the extensive potential of the walking machine tool

Keywords： legged robot parallel mechanism mobile machine tool in-situ machining

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Green catalytic engineering: A powerful tool for sustainable development in chemical industry

Kequan Chen, Dangguo Cheng, Chong Peng, Dan Wang, Jintao Zhang

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4, Pages 835-837 doi: 10.1007/s11705-018-1756-1

Abstract:

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A PLATFORM TO AID SELECT THE OPTIMAL TOOL TO DESIGN GUIDE RNAS

Frontiers of Agricultural Science and Engineering Pages 296-305 doi: 10.15302/J-FASE-2022479

Abstract:

● Summaries on sgRNAs design.

Keywords： CRISPR/Cas Aid-TG gene editing sgRNA design web server

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Kinematic error separation on five-axis NC machine tool based on telescoping double ball bar

Min WANG, Jianzhong HU, Tao ZAN

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4, Pages 431-437 doi: 10.1007/s11465-010-0110-1

Abstract: transformation matrix (HTM) method are applied in establishing the kinematic error model of five-axis machining toolmodel, a new method for the kinematic error separation in five-axis numerical control (NC) machining toolto measure the relative distance between the spindle and the worktable in the motion of NC machining tooltelescoping double ball bar is substituted into the model to obtain kinematic error of NC machining toolis high precision and can be applied to effectively and conveniently measure the five-axis machining tool

Keywords： error modeling error separation telescoping double ball bar five-axis numerical control (NC) machining tool

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Iterative HOEO fusion strategy: a promising tool for enhancing bearing fault feature

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0725-z

Abstract: As parameter independent yet simple techniques, the energy operator (EO) and its variants have received considerable attention in the field of bearing fault feature detection. However, the performances of these improved EO techniques are subjected to the limited number of EOs, and they cannot reflect the non-linearity of the machinery dynamic systems and affect the noise reduction. As a result, the fault-related transients strengthened by these improved EO techniques are still subject to contamination of strong noises. To address these issues, this paper presents a novel EO fusion strategy for enhancing the bearing fault feature nonlinearly and effectively. Specifically, the proposed strategy is conducted through the following three steps. First, a multi-dimensional information matrix (MDIM) is constructed by performing the higher order energy operator (HOEO) on the analysis signal iteratively. MDIM is regarded as the fusion source of the proposed strategy with the properties of improving the signal-to-interference ratio and suppressing the noise in the low-frequency region. Second, an enhanced manifold learning algorithm is performed on the normalized MDIM to extract the intrinsic manifolds correlated with the fault-related impulses. Third, the intrinsic manifolds are weighted to recover the fault-related transients. Simulation studies and experimental verifications confirm that the proposed strategy is more effective for enhancing the bearing fault feature than the existing methods, including HOEOs, the weighting HOEO fusion, the fast Kurtogram, and the empirical mode decomposition.

Keywords： higher order energy operator fault diagnosis manifold learning rolling element bearing information fusion

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New method for computer numerical control machine tool calibration: Relay method

LIU Huanlao, SHI Hanming, LI Bin, ZHOU Huichen

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3, Pages 301-304 doi: 10.1007/s11465-007-0053-3

Abstract: Relay measurement method, which uses the kilogram-meter (KGM) measurement system to identify volumetric errors on the planes of computer numerical control (CNC) machine tools, is verified through experimental tests. During the process, all position errors on the entire plane table are measured by the equipment, which is limited to a small field. All errors are obtained first by measuring the error of the basic position near the original point. On the basis of that positional error, the positional errors far away from the original point are measured. Using this analogy, the error information on the positional points on the entire plane can be obtained. The process outlined above is called the relay method. Test results indicate that the accuracy and repeatability are high, and the method can be used to calibrate geometric errors on the plane of CNC machine tools after backlash errors have been well compensated.

Keywords： positional volumetric information process repeatability

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Whole-life Thinking and Engineering the Future

Roger Flanagan

Frontiers of Engineering Management 2014, Volume 1, Issue 3, Pages 290-296 doi: 10.15302/J-FEM-2014040

Abstract: Whole-life thinking for engineers working on the built environment has become more important in a fastWhole-life thinking is not new, every project attempts to balance the initial capital cost with the operatingSystems thinking provides one approach to developing a more robust whole-life approach.New approaches are needed to produce more reliable whole-life predictions.Best value, rather than lowest cost, can be achieved by using whole-life appraisal as a part of the design

Keywords： whole-life thinking systems thinking complexity chaos risk management through life

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Design and Fabrication of Multiphase Composite Ceramic Tool Materials

Xu Chonghai,Ai Xing

Strategic Study of CAE 2001, Volume 3, Issue 3, Pages 71-74

Abstract: between the mechanical properties and the material compositions of the multiphase composite ceramic toolThen, an advanced Al₂〇₃—SiC-(W,Ti)C multiphase composite ceramic cutting toolproposed in the present study is reasonable and feasible for the design of multiphase composite ceramic tool

Keywords： ceramic tool material multiphase composite material design model mechanical property

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Service Life Supervision for Individual Aircraft Structural System Based on Aircraft Structural Life

He Yuting

Strategic Study of CAE 2006, Volume 8, Issue 6, Pages 23-27

Abstract:

Based on the analysis of the aircraft structural life envelope (ASLE) under the baseline operationalconditions, an approach of establishment of aircraft structural life envelope (ASLE) under nonbaselineThe method of service life supervision for individual aircraft structural system(SLSFIASS) under nonbaseline

Keywords： aircraft structure life envelope service life supervision time between overhauls

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Real-time tool condition monitoring method based on temperature measurement and artificial neural network

Frontiers of Mechanical Engineering doi: 10.1007/s11465-021-0661-3

Abstract: Tool failures in machining processes often cause severe damages of workpieces and lead to large quantitiesof loss, making tool condition monitoring an important, urgent issue.Here, a real-time tool condition monitoring method integrated in an in situ fiber optic temperatureselected and input into the artificial neural network for classification, and a caution is given if the tool

Keywords： tool condition monitoring cutting temperature neural network learning rate adaption