Results 41 to 50 of about 21,018 (212)

Anterior Cruciate Ligament Reconstruction Using the Tape‐Active Reconstruction System With Semitendinosus Graft: A Primary Load‐Bearing Construct

Arthroscopy Techniques, EarlyView.
Abstract Anterior cruciate ligament reconstruction is a widely performed orthopaedic procedure; however, early graft elongation and loss of tension remain significant biomechanical challenges, particularly with the use of soft tissue autografts. In this technical note, the tape‐active reconstruction system is described as an augmentation technique in ...
Ahmet Emin Okutan, Lokman Kehribar
wiley   +1 more source

Dynamic and Structural Performances of a New Sailcraft Concept for Interplanetary Missions

The Scientific World Journal, 2015
Typical square solar-sail design is characterised by a central hub with four-quadrant sails, conferring to the spacecraft the classical X-configuration.
Alessandro Peloni, Daniele Barbera, Susanna Laurenzi, Christian Circi   +3 more
doaj   +1 more source

Review and prospects of shear test of bolted rock joints

Deep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren, Fan Yang, Manchao He, Yong Yuan, Zhigang Tao   +4 more
wiley   +1 more source

Measured temperature effects during the construction of a prestressed precast concrete bridge beam

MATEC Web of Conferences, 2018
Prestress losses in precast concrete beams include the short-term effects of elastic shortening and the long-term effects of concrete shrinkage, concrete creep and steel relaxation. Temperature effects are, however, excluded. The aim of this research was
Küsel Frank, Kearsley Elsabe, Butler Liam J., Skorpen Sarah A., Elshafie M.Z.E.B.   +4 more
doaj   +1 more source

Advancing mine pillar design: Evaluating traditional methods and integrating AI for enhanced stability of pillars in the Great Dyke, Zimbabwe

Deep Underground Science and Engineering, EarlyView.
B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza, Hendrik Grobler, Peter Apata Olubambi, Moshood Onifade, Manoj Khandelwal   +4 more
wiley   +1 more source

Design and Construction of a Prototype Tensegrity Structure with Integrated Pretensioning and Instrumentation Features

Buildings
Tensegrity structures have developed greatly in recent years due to their unique mechanical, structural, and mathematical properties. This study presents the design and fabrication of a tensegrity structure prototype.
Manuel Alejandro Fernández-Ruiz, Milagros Huerta-Gómez-Merodio, Pedro López-Jiménez, Juan Francisco Carbonell-Márquez   +3 more
doaj   +1 more source

Embedding Fiber Segment Interferometry for Localization of Defects in Composite Structures

Polymer Composites, EarlyView.
Graphical representation of composite structures with embedded fiber optic sensors for structural health monitoring, enabling strain measurement and damage localization under mechanical loading. ABSTRACT In the area of structural health monitoring (SHM), embedding strain sensors into smart composites is a key strategy for detecting failures arising ...
Shiva Mohammadkarimi, Christoph Hemeling, Thomas Kissinger, Florian Puch   +3 more
wiley   +1 more source

Position Transmission Control in Tendon–Sheath Mechanisms: A Critical Review and a Promising Solution

SmartBot, EarlyView.
Tendon‐sheath mechanisms are widely used in various robotic systems for remote position transmission, including aerospace vehicles, flexible rescue robots, dexterous robotic hands, exoskeleton robots, soft wearable devices, industrial robots, and flexible surgical robots.
Jiaqi Li, Qian Gao
wiley   +1 more source

Evaluation of prestress losses in concrete beams using destructive and non‐destructive methods

Structural Concrete, EarlyView.
Abstract Over the past few decades, prestressing techniques have become essential in the construction of key structures, infrastructure, and bridges. The serviceability and safety of prestressed concrete (PC) elements are closely tied to the effectiveness of the prestressing process.
A. N. Consiglio, G. Muciaccia, G. Rosati
wiley   +1 more source

Influence of pre-tensioning high-performance yarns on the bending stiffness of textile composites

Journal of Industrial Textiles
This study explores the stiffness enhancement in textile composites using four different fiber types: carbon, Kevlar, Vectran, and high-tenacity polyester (HTP). Pretension levels of 0.2, 2, 5, and 10 N were applied.
Magdi El Messiry, Eman Eltahan, Shereen Fathy   +2 more
doaj   +1 more source