Ball Impact Response of Unstrengthened and Chemically Strengthened Glass Bars

2013 ◽  
Vol 97 (1) ◽  
pp. 189-197 ◽  
Author(s):  
Phillip Jannotti ◽  
Ghatu Subhash ◽  
Arun K. Varshneya
Keyword(s):  
Impact Response ◽  
Ball Impact ◽  
Strengthened Glass

Ball impact response based on modeling techniques

2009 ◽  
Author(s):  
Kazunori Shinohara ◽  
Qiang Yu ◽  
Masato Fujita ◽  
Hideaki Ishii ◽  
Hisao Ishikawa
Keyword(s):  
Impact Response ◽  
Ball Impact ◽  
Modeling Techniques

Comparing the Impact Response of 3D Fiber Reinforced Foam Core with Monolithic Foam Core in Composite Sandwich Structures

2021 ◽  
Author(s):  
Michael J. Wu ◽  
Steffen Tai ◽  
Jacob Rome ◽  
Vinay K. Goyal ◽  
Zachary T. Kier ◽  
...  
Keyword(s):  
Sandwich Structures ◽  
Impact Response ◽  
Foam Core ◽  
Fiber Reinforced ◽  
Composite Sandwich ◽  
Composite Sandwich Structures ◽  
The Impact

Influence of Ply Stacking Sequences on the Impact Response of Carbon Fibre Reinforced Polymer Composite Laminates

2019 ◽  
Author(s):  
Kristian Gjerrestad Andersen ◽  
Gbanaibolou Jombo ◽  
Sikiru Oluwarotimi Ismail ◽  
Segun Adeyemi ◽  
Rajini N ◽  
...  
Keyword(s):  
Carbon Fibre ◽  
Polymer Composite ◽  
Composite Laminates ◽  
Impact Response ◽  
Reinforced Polymer ◽  
Carbon Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
The Impact

scholarly journals Viscous-like forces control the impact response of shear-thickening dense suspensions

2021 ◽  
Vol 923 ◽  
Author(s):  
Marc-Andre Brassard ◽  
Neil Causley ◽  
Nasser Krizou ◽  
Joshua A. Dijksman ◽  
Abram. H. Clark
Keyword(s):  
Shear Thickening ◽  
Impact Response ◽  
Dense Suspensions ◽  
The Impact

Abstract

Effect of long-term moisture exposure on impact response of glass-reinforced vinylester

2021 ◽  
pp. 147509022199616
Author(s):  
Fatemeh Alizadeh ◽  
Navid Kharghani ◽  
Carlos Guedes Soares
Keyword(s):  
Water Uptake ◽  
Failure Modes ◽  
Sea Water ◽  
Composite Plates ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Water Type ◽  
Interfacial Damage ◽  
Impact Properties ◽  
The Impact

Glass/Vinylester composite laminates are comprehensively characterised to assess its impact response behaviour under moisture exposure in marine structures. An instrumented drop weight impact machine is utilised to determine the impact responses of dry and immersed specimens in normal, salted and sea water. The specimens, which had three different thicknesses, were subjected to water exposure for a very long period of over 20 months before tested in a low-velocity impact experiment. Water uptake was measured primarily to study the degradation profiles of GRP laminates after being permeated by water. Matrix dissolution and interfacial damage observed on the laminates after prolonged moisture exposure while the absorption behaviour was found typically non-Fickian. The weight of the composite plates firstly increased because of water diffusion up to month 15 and then decreased due to matrix degradation. The specimens with 3, 6 and 9 mm thickness exhibited maximum water absorption corresponding to 2.6%, 0.7% and 0.5% weight gain, respectively. In general, the results indicated that water uptake and impact properties were affected by thickness and less by water type. Impact properties of prolonged immersed specimens reduced remarkably, and intense failure modes detected almost in all cases. The least sensitive to impact damage were wet specimens with 9 mm thickness as they indicated similar maximum load and absorbed energy for different impact energies.

Comparative study on ballistic impact response of neat fabric, compliant, hybrid compliant and stiff composite

2021 ◽  
Vol 165 ◽  
pp. 107986
Author(s):  
Vishwas Mahesh ◽  
Sharnappa Joladarashi ◽  
Satyabodh M. Kulkarni
Keyword(s):  
Comparative Study ◽  
Ballistic Impact ◽  
Impact Response

scholarly journals Ball Impact Position in Recreational Male Padel Players: Implications for Training and Injury Management

2021 ◽  
Vol 18 (2) ◽  
pp. 435
Author(s):  
Bernardino Javier Sánchez-Alcaraz ◽  
Rafael Martínez-Gallego ◽  
Salvador Llana ◽  
Goran Vučković ◽  
Diego Muñoz ◽  
...  
Keyword(s):  
Motion Tracking ◽  
Center Of Gravity ◽  
Musculoskeletal Injuries ◽  
Ball Impact ◽  
Video System ◽  
Injury Management ◽  
Racket Sports ◽  
Impact Position ◽  
Proper Training

Racket sports such as padel are characterized by the repetition of unilateral gestures, which can lead to negative adaptations like asymmetries or overuse musculoskeletal injuries. The purpose of this study was to determine the differences in ball impact positions (i.e., forward or backward of the center of gravity) in nine stroke types in a sample of forty-eight recreational male padel players. The sample included 14,478 shots corresponding to 18 matches from six tournaments. Forty-eight male padel players were classified into two groups according to their level: trained (n = 24) and novice (n = 24). Type of stroke and ball impact position were registered using a computerized motion tracking video system. The ball impact position was computed from the distance (cm) between the coordinates of the ball and the player’s center of gravity. Results show that trained players hit the ball in a more backward position (from 11 to 25 cm, compared to novice) in serve and offensive strokes (volleys, trays, and smashes) but used more forward strokes (from 7 to 32 cm, compared to novice) in defensive shots (groundstrokes, wall strokes, and lobs). Because the current differential variables are trainable and demonstrated to be of relevance for performance, the findings of this study may assist padel coaches in designing proper training plans to improve effectiveness and to prevent musculoskeletal injuries regarding the type of stroke and ball impact position. Such knowledge may constitute a very important factor affecting technique, biomechanics, and injury management in padel players of different competitive levels.

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