Results 91 to 100 of about 353,031 (193)

Fabrication of Micro-Holes with High Aspect Ratios in C_f/SiC Composites Using Coaxial Waterjet-Assisted Nanosecond Laser Drilling

Micromachines
In the present study, the coaxial waterjet-assisted nanosecond laser drilling of micro-holes in Cf/SiC composites, coupled with nanosecond laser drilling in air for fabricating micro-holes with high aspect ratios, were investigated.
Chenhu Yuan, Zenggan Bian, Yue Cao, Yinan Xiao, Bin Wang, Jianting Guo, Liyuan Sheng   +6 more
doaj   +1 more source

A New Numerical Method for Calculation of Micro- Stress on Unidirectionally Reinforced Plates with Circular Hole In Case of Extension to a Principal Direction [PDF]

, 2014
The aim of the present study was to compute the stress concentration in reinforced composite plate with circular hole with respect to the volume ratio of the component materials in composite.
Darya zadeh, S., Daryazadeh, P., Lvov, G. I.   +2 more
core  

Process Optimization on Trepanning Drilling in Titanium Alloy Using a Picosecond Laser via an Orthogonal Experiment

Micromachines
To optimize the laser drilling process and reduce the processing time, this study investigates picosecond laser trepan drilling on the titanium alloy TC4, analyzing the effects of laser parameters on micro-hole diameter, taper, and roundness.
Liang Wang, Yefei Rong, Long Xu, Changjian Wu, Kaibo Xia   +4 more
doaj   +1 more source

Improved Performance With the Micro-Hole Zone Intermittent Catheter: A Combined Analysis of 3 Randomized Controlled Studies Comparing the New Catheter Technology With a Conventional Eyelet Catheter. [PDF]

J Wound Ostomy Continence Nurs, 2023
Landauro MH, Tentor F, Pedersen T, Jacobsen L, Bagi P.   +4 more
europepmc   +1 more source

Micro-extrusion 3D printing and sewage filtration performance of multi-layer cross-hole alumina ceramics

Cailiao gongcheng
The ceramic slurry is prepared using alumina and calcium carbonate powder as matrix materials，polyvinyl alcohol solution as a binder，and acetic acid as a dispersant.
WANG Yi, ZHANG Chi, LIU Fuchu, WANG Miao, QI Ji, SUN Qinglei, HAN Guangchao   +6 more
doaj   +1 more source

New Intermittent Urinary Micro-Hole Zone Catheter Shows Enhanced Performance in Emptying the Bladder: A Randomised, Controlled Crossover Study. [PDF]

J Clin Med, 2023
Landauro MH, Jacobsen L, Tentor F, Pedersen T, Rovsing C, Feix do Nascimento O, Kennelly M.   +6 more
europepmc   +1 more source

PbS QD-Coated Si Micro-Hole Array/Graphene vdW Schottky Near-Infrared Photodiode for PPG Heart Rate Measurement. [PDF]

Sensors (Basel), 2023
Xu M, Cui Y, Zhang T, Lu M, Yu Y.
europepmc   +1 more source

Micro-Hole Generation by High-Energy Pulsed Bessel Beams in Different Transparent Materials. [PDF]

Micromachines (Basel), 2021
Belloni VV, Bollani M, Eaton SM, Di Trapani P, Jedrkiewicz O.   +4 more
europepmc   +1 more source

Polishing inner wall of crossed deep micropores using magnetic microabrasive jet technology

Jin'gangshi yu moliao moju gongcheng
ObjectivesPrecision micro through-hole parts are widely used. However, due to the limitations of manufacturing technology, precision parts with complex shapes, such as cross micro-holes, may have defects such as burrs, scratches, and nodules during the ...
Zezhi WANG, Jie WANG, Xiaogang MA, Fan LI, Xinya FAN, Yan CHEN   +5 more
doaj   +1 more source

Femtosecond laser drilling 100 μm diameter micro holes with aspect ratios > 20 in a Nickel based superalloy

Journal of Materials Research and Technology
Micro holes with high aspect ratios are essential for the cooling performance of aero-engines. Challenges persist in deep hole drilling due to the escalating stringent requirements in terms of hole diameters, aspect ratios, and 3D profiles. In this study,
Nan Zhang, Manshi Wang, Mingxia Ban, Lanjun Guo, Weiwei Liu   +4 more
doaj   +1 more source