Results 31 to 40 of about 388,520 (305)
Investigation of the Cross-Cutting Polycrystalline Diamond Compact Bit Drilling Efficiency
Shock and Vibration, 2021 The parallel track scraping principle of conventional PDC bits largely limits the cutting efficiency and working life in deep formations. Cross-cutting polycrystalline diamond compact (PDC) bit may be an efficient drilling tool that increases the rock ...
Chun-Liang Zhang +5 more
doaj +1 more source
Automation of Operations Design for Complex-Shaped Surfaces Processing [PDF]
MATEC Web of Conferences, 2019 Research work is aimed at modeling the process of milling surfaces of complex shape in automated CAD/CAM systems. To reduce labour input of this process, an algorithm for designing milling operations is proposed.
Markova Margarita +3 more
doaj +1 more source
A comparison of two configurations for a dual-resonance cymbal transducer [PDF]
, 2018 The ability to design tuned ultrasonic devices that can be operated in the same mode at two different frequencies has the potential to benefit a range of applications, such as surgical cutting procedures where the penetration through soft then hard ...
Feeney, Andrew, Lucas, Margaret
core +1 more source
Estimation of specific cutting energy in an S235 alloy for multi-directional ultrasonic vibration-assisted machining using the Finite Element Method [PDF]
, 2020 The objective of this work is to analyze the influence of the vibration-assisted turning process on the machinability of S235 carbon steel. During the experiments using this vibrational machining process, the vibrational amplitude and frequency of the ...
Florez García, Luis Carlos +2 more
core +2 more sources
Applied Sciences, 2023 This paper aims to provide essential guidance for the crashworthiness design of cutting energy-absorbing structures for subway vehicles. By investigating tool failure with experiment and numerical approaches, a new energy-absorbing tube structure was ...
Qianchen Gao +4 more
doaj +1 more source
Development of information system of geometrical modeling of parameters of cutting tools for turning processing details [PDF]
, 2015 Uk: Розробка спеціалізованої інформаційної системи розрахунку параметрів різальних інструментів для токарної обробки деталей вузлів та агрегатів сільськогосподарського призначення.
Мацулевич, Александр Евгеньевич +1 more
core
Nonlinear characterization of half and full wavelength power ultrasonic devices [PDF]
, 2016 It is well known that power ultrasonic devices whilst driven under elevated excitation levels exhibit nonlinear behaviors. If no attempt is made to understand and subsequently control these behaviors, these devices can exhibit poor performance or even ...
Cardoni, Andrea +2 more
core +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Ongoing evidence indicates increased risk of sarcopenic obesity among children and young people (CYP) with acute lymphoblastic leukemia (ALL), often beginning early in treatment, persisting into survivorship. This review evaluates current literature on body composition in CYP with ALL during and after treatment.
Lina A. Zahed +5 more
wiley +1 more source
Adhesion resistance of nanocoatings of tool working surfaces [PDF]
MATEC Web of Conferences, 2020 To increase the strength, reliability, durability of the cutting tool, various wear-resistant coatings are applied to its cutting part. At the same time, under cutting conditions, it is necessary to ensure a high degree of adhesion of the coating to this
Frolenkova Larissa +4 more
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background We describe clinical and biologic characteristics of neuroblastoma in older children, adolescents, and young adults (OCAYA); describe survival outcomes in the post‐immunotherapy era; and identify if there is an age cut‐off that best discriminates outcomes.
Rebecca J. Deyell +14 more
wiley +1 more source