Results 61 to 70 of about 205,612 (304)

Analytical prediction of stability limit in turning operations [PDF]

, 2006
Unstable cutting due to chatter vibrations is one of the most important problems during metal cutting operations. Chatter can be a limitation for productivity and surface quality in turning operations, especially when long and slender tools and parts are
Budak, Erhan, Ozlu, Emre, Özlü, Emre
core  

A monolithic and flexible fluoropolymer film microreactor for organic synthesis applications [PDF]

, 2019
A photocurable and viscous fluoropolymer with chemical stability is a highly desirable material for fabrication of microchemical devices. Lack of a reliable fabrication method, however, limits actual applications for organic reactions.
Im, DJ, Kim, DP, Kim, H, Kim, JO, Ko, DH, Min, KI, Park, SY   +6 more
core   +1 more source

Thermoelectric Modules Incorporating MgAgSb and Mg3(Sb,Bi)2 Synthesized Using a Melting Method

Advanced Engineering Materials, EarlyView.
A scalable synthesis method for a thermoelectric material of MgAgSb is established. A thermoelectric power module of MgAgSb/Mg3(Sb,Bi)2 is fabricated, showing the conversion efficiency of 7.4% at ΔT = 315 K. The performance is comparable to conventional Bi2Te3 modules when they are operated with an air‐cooled heat exchanger.
Kazuo Nagase, Hironori Ohshima, Kunihiro Kihou, Haruno Kunioka, Ushin Anazawa, Ryosuke Sakagami, Yosuke Goto, Masayuki Murata, Chul‐Ho Lee   +8 more
wiley   +1 more source

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

Measurement of the energy resolution and calibration of hybrid pixel detectors with GaAs:Cr sensor and Timepix readout chip [PDF]

, 2015
This paper describes an iterative method of per-pixel energy calibration of hybrid pixel detectors with GaAs:Cr sensor and Timepix readout chip. A convolution of precisely measured spectra of characteristic X-rays of different metals with the resolution ...
Bell, S. T., Butler, A. P., Butler, P. H., Chelkov, G. A., Dedovich, D. V., Demichev, M. A., Elkin, V. G., Gostkin, M. I., Kotov, S. A., Kozhevnikov, D. A., Kruchonak, U. G., Nozdrin, A. A., Porokhovoy, S. Yu., Potrap, I. N., Smolyanskiy, P. I., Zakhvatkin, M. M., Zhemchugov, A. S.   +16 more
core   +3 more sources

Mathematical model of a road harrow’s operating process in destruction of asphalt concrete

Вестник СибАДИ, 2017
This article dwells on the equation of geometric constraints of road harrow’s links, mathematical model of reaction force of developing medium on the rotor, changing the position of the cog during rotation and moving the machine, detection of angle ...
S. D. Ignatov, N. S. Sherstnev
doaj   +1 more source

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

Advanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song, Stefan Rettinger, Chengzhang Xu, Ulrich Mansfeld, Markus Retsch   +4 more
wiley   +1 more source

An Innovative Experimental Study of Corner Radius Effect on Cutting Forces [PDF]

, 2014
The cutting forces are often modelled using edge discretisation methodology. In finish turning, due to the smaller corner radii, the use of a local cutting force model identified from orthogonal cutting tests poses a significant challenge. In this paper,
BISSEY BRETON, Stéphanie, CAMPOCASSO, Sébastien, COSTES, Jean-Philippe, POULACHON, Gérard   +3 more
core   +6 more sources

Effect of coefficient of friction at the sliding zone of chip-tool interface on chip curl diameter and secondary shear zone thickness during tapping process

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2017
During the tapping process, chip snarling at high cutting speeds is a major obstacle in the improvement of machining efficiency. A cut tap tool coated with nickel-phosphorus (Ni-P)/abrasive particle composite film reduced the chip curl diameter and ...
Yasuyoshi SAITO, Takeshi YAMAGUCHI, Ryo ITAGAKI, Kei SHIBATA, Takeshi KUBO, Wataru WATANABE, Satoru OYAMA, Kazuo HOKKIRIGAWA   +7 more
doaj   +1 more source

Geometrical analysis of thread milling—part 2: calculation of uncut chip thickness [PDF]

The International Journal of Advanced Manufacturing Technology, 2010
Thread milling offers interesting possibilities for machining internal or external threads. This machining technique uses a mill with a triangular profile for metric threads and a helical interpolation strategy. Thus, the uncut chip thickness cannot be easily evaluated from a simplified approach.
Fromentin, Guillaume, Poulachon, Gérard
openaire   +3 more sources