Results 21 to 30 of about 4,576,853 (213)

Experimental and numerical analysis of the unreinforced and reinforced notched timber beam by a screw

Vietnam Journal of Science, Technology and Engineering, 2018
Timber is highly anisotropic. It behaves differently in diverse directions. Tension and compression perpendicular to the grain present a low strength with respect to the ones parallel to the grain.
Van Dang Tran, Dong Tran, Marc Oudjene
doaj   +1 more source

Self-Drilling Versus Self-Tapping Screws: A 3D Finite Element Analysis

, 2020
Study Design: Self-tapping and self-drilling screws are twomodalities available for plate fixation. Whencompared to self-drilling, self-tapping screws have a few drawbacks like screw loosening, thermal osteolysis, equipment dependent, and time-consuming.
Vineeth Kumar, Kubra Al-Khuteja, Kavitha Prasad, Shwetha V., K. Ranganath, Tanvy Sansgiri   +5 more
core   +1 more source

The behavior of cold-formed steel and Belian hardwood self-tapping screw connections [PDF]

, 2022
Cold-formed steel has been widely used to retrofit and restore buildings, especially timber buildings. This is because the material is readily available, flexible, and lightweight.
Gary, R.M., Lim, J., Lau, H.H., Roy, K., Adeline, Ng L.Y., Fang, Z.   +5 more
core  

Comparative evaluation of insertion torque and mechanical stability for self-tapping and self-drilling orthodontic miniscrews – an in vitro study

Head & Face Medicine, 2017
Background The aim of the present study was to evaluate the relationship between insertion torque and stability of miniscrews in terms of resistance against dislocation, then comparing a self-tapping screw with a self-drilling one.
Michele Tepedino, Francesco Masedu, Claudio Chimenti   +2 more
doaj   +1 more source

Geometry of anchoring miniscrew in the lateral palate that support a tissue bone borne maxillary expander affects neighboring root damage

Scientific Reports, 2021
Anchoring miniscrews used for a tissue bone borne maxillary expander (C-expander) can fail if they contact tooth roots or perforate the maxillary sinus. Cone beam computed tomography images were reviewed retrospectively to evaluate the geometric factors ...
Song Hee Oh, Sae Rom Lee, Jin-Young Choi, Hyo-Won Ahn, Seong-Hun Kim, Gerald Nelson   +5 more
doaj   +1 more source

The Automated Threaded Fastening Based on On-line Identification

International Journal of Advanced Robotic Systems, 2004
The principle of the thread fastenings have been known and used for decades with the purpose of joining one component to another. Threaded fastenings are popular because they permit easy disassembly for maintenance, repair, relocation and recycling ...
Mongkorn Klingajay, Nicolas Ivan Giannoccaro   +1 more
doaj   +1 more source

Self-Tapping Screw Performance in Aluminum-Steel Joints

, 2016
Over the last few decades, lightweight material joints including plastics, aluminum, magnesium and various composites have been widely used in many mechanical and structural applications such as automotive, aircraft and so on, for their high strength-to ...
Kshitij Satav, Sayed A. Nassar, Shraddha Jagatap, Zhijun Wu   +3 more
core   +1 more source

ASSESSMENT OF IMPLANT STABILITY IN IMMEDIATELY LOADED MAXILLARY FIXED DETACHABLE RESTORATIONS USING OSSEODENSIFICATION (RANDOMIZED CLINICAL TRIAL) [PDF]

Alexandria Dental Journal
Background: Rehabilitation of single edentulous maxillary arches with screw-retained prostheses is considered an optimal treatment choice. However, atrophy in the maxilla may result in deficient bone volume for implants.
Alaa Khalifa, Ahmed Abdelhamid, Safeya Elgharabawy, Ahmed Hommos   +3 more
doaj   +1 more source

Structure‐Guided Balancing of Ambipolar Transport Enables Symmetric Switching in Heterojunction Bilayer Organic Transistor Inverters

Advanced Functional Materials, EarlyView.
Balancing the spatially separated p‐ and n‐type transport pathways in heterojunction‐bilayer OTFTs enables symmetric inverter switching (VM ≈ 0.5VDD), whereas discrete integration of unipolar OTFTs gives polarity‐dependent and resistive responses. ABSTRACT High inverter performance in ambipolar organic electronics requires balanced channel strengths ...
Sohyun Choi, Young Yong Kim, Ji Ho Youk, Hoichang Yang   +3 more
wiley   +1 more source

Direct Growth of 2D Bilayers on Au(111) for Low‐Coercive Sliding Ferroelectricity

Advanced Materials, EarlyView.
Controlled CVD growth of stacking‐defined bilayer ReS2 on Au(111) enables parallel‐stacked bilayers with intrinsic sliding ferroelectricity, a strong piezoelectric response, and an ultralow coercive voltage. Atomic‐resolution imaging and in situ measurements further reveal the decisive role of clean interfaces in achieving low‐barrier ferroelectric ...
Honglin Chen, Ke Yang, Yuhuan Li, Lingli Huang, Tianren Chen, Ming Yang, Jiong Zhao, Thuc Hue Ly   +7 more
wiley   +1 more source