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RISControl of Chip Formation and Improved Chip Ejection in Drilling With Modulation-Assisted Machining
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Drilling with modulation-assisted machining (MAM) superimposes a low-frequency oscillation onto the drill feed motion. The otherwise continuous cutting in the drilling process is converted into a series of discrete cutting ...
In Situ Analysis of Deformation Mechanics of Constrained Cutting Toward Enhanced Material Removal
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Chip formation in conventional cutting occurs by deformation that is only partially bounded by the cutting tool. The unconstrained free surface makes it difficult to determine and to control the deformation of chip formation. ...
Development and Mechanical Performance of Fire-Resistive Engineered Cementitious Composites
Publisher: American Society of Civil Engineers
Abstract: A special material, fire-resistive engineered cementitious composite (FR-ECC), is introduced as a new kind of fire insulation. This paper presents the production process of FR-ECC, including the mix proportions, mixing, ...
Development and Mechanical Performance of Fire-Resistive Engineered Cementitious Composites
Publisher: American Society of Civil Engineers
Abstract: A special material, fire-resistive engineered cementitious composite (FR-ECC), is introduced as a new kind of fire insulation. This paper presents the production process of FR-ECC, including the mix proportions, mixing, ...
Causes, Solutions, and Adoption Barriers of Falls from Roofs in the Singapore Construction Industry
Publisher: American Society of Civil Engineers
Abstract: Fall from roof (FFR) has been a perennial problem in the construction industry. It has been one of the leading sources of injuries and accidents in many countries. The objectives of this paper are to (1) investigate ...
Piezo-Actuated Modulation-Assisted Drilling System With Integrated Force Sensing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new electromechanical modulation system designed with piezoelectric stacks for both linear actuation and force sensing functions is described. The system can be adapted for modulation-assisted machining (MAM) drilling ...
In Situ Observations of Rain Rate and Precipitation Microphysics over the Coastal Area of South China: Perspectives for Satellite Validation
Publisher: American Meteorological Society
Effect of Low Frequency Modulation on Deformation and Material Flow in Cutting of Metals
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The deformation field, material flow, and mechanics of chip separation in cutting of metals with superimposed lowfrequency modulation (<1000 Hz) are characterized at the mesoscale using highspeed imaging and particle ...
Large Eddy Simulation of the Rotating Stall in a Pump Turbine Operated in Pumping Mode at a Part Load Condition
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The investigation of the rotating stall phenomenon appearing in the HYDRODYNA pumpturbine reduced scale model is carried out by performing a largescale large eddy simulation (LES) computation using a mesh featuring ...
Microstructure Effects on Cutting Forces and Flow Stress in Ultra Precision Machining of Polycrystalline Brittle Materials
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a physicsbased analysis to quantitatively describe the effects of grain size, grain boundaries, and crystallographic orientation on the flow stress of the polycrystalline material and thereby on the ...