New generation drilling bits
نویسندگان
چکیده
منابع مشابه
Drilling Mechanism Investigation on SiC Ceramic Using Diamond Bits
Results and Conclusions: The results show that, brittle fracture is the dominant way for SiC ceramic’s removal mechanism, plastic deformation always exists during the drilling process. Brittle fracture includes cleavage fracture, transgranular fracture, intergranular fracture, material peeling off and grain boundary breakage; resintering and recrystallization happen under the joint action of gr...
متن کاملNew Drilling Technology
Cunningham is vice president in charge of the regional section of the Atlanta Fed's research department. Mancuso is an analyst in the regional section. They thank Jimmy Stone of Stone Energy, David Guidry of Guico Machine Works, and Frank King and Will Roberds for insightful discussion and comments. Shocks are mostly of concern when the potential outcome is bad. The most infamous example of a n...
متن کاملTaguchi analysis of delamination associated with various drill bits in drilling of composite material
This paper presents a prediction and evaluation of delamination factor in use of twist drill, candle stick drill and saw drill. The approach is based on Taguchi’s method and the analysis of variance (ANOVA). An ultrasonic C-Scan to examine the delamination of carbon fiber-reinforced plastic (CFRP) laminate is used in this paper. The experiments were conducted to study the delamination factor un...
متن کاملEffects of special drill bits on drilling-induced delamination of composite materials
Drilling is the most frequently employed operation of secondary machining for fiber-reinforced materials owing to the need for joining structures. Delamination is among the serious concerns during drilling. Practical experience proves the advantage of using such special drills as saw drill, candle stick drill, core drill and step drill. The experimental investigation described in this paper exa...
متن کاملComprehensive analysis of delamination in drilling of composite materials with various drill bits
Beside the twist drill, the effects of various drill geometries were rarely discussed in analytical fashion. This study presents a comprehensive analysis of delamination in use of various drill types, such as saw drill, candle stick drill, core drill and step drill. In this analysis, the critical thrust force at the onset of delamination is predicted and compared with the twist drill. © 2003 El...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IOP Conference Series: Earth and Environmental Science
سال: 2017
ISSN: 1755-1307,1755-1315
DOI: 10.1088/1755-1315/87/5/052029