Composite structures under ballistic impact

Naik, N.K.; Shrirao, P.

doi:10.1016/j.compstruct.2004.05.006

Cited by 285 publications

(172 citation statements)

References 20 publications

Supporting

Mentioning

170

Contrasting

Order By: Relevance

“…As in the proposals of Morye et al [11] and Naik et al [8,20,24], the model considers several energy-absorption mechanisms: energy absorbed by fibres (E FB ), energy absorbed in terms of acceleration field within the laminate (E KL ); energy absorbed by delamination (E DL ), and matrix cracking (E MC ).…”

Section: Analytical Modelmentioning

confidence: 99%

“…Several authors have studied the impact behaviour of CFRP woven laminates [9,14,[19][20][21][22], but much less information is available in relation to the importance of each energy-absorption mechanism and the influence of the impact energy in each mechanism. Naik and Shrirao [20] showed that for a CFRP woven laminate impacted by flat-ended projectile slightly over perforation velocity the main mechanism is the energy of the moving portion of the laminate, the energy absorbed by shear plugging being less relevant. Goldsmith et al [19] affirmed that in a 2.5 mm CFRP woven laminate the main energy-absorption mechanism at perforation velocity is the failure of fibres and friction.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of shear plugging in the energy absorbed by thin carbon-fibre laminates subjected to high-velocity impacts

Buitrago

García-Castillo

Barbero

2013

Composites Part B: Engineering

View full text Add to dashboard Cite

a b s t r a c tThis work examines the energy-absorption process in thin woven laminates made from carbon fibres, with the aim of analysing the energy employed in the formation of a shear plug. This study was conducted with a simplified model which considered five energy-absorption mechanisms. The model was validated with experimental tests and numerical simulations, with regard to the residual velocity of the projectile and perforation velocity. The model makes it possible to evaluate the influence of the shear plugging in laminates of different thickness. It has been demonstrated that this energy-absorption mechanism needs to be considered in the analysis. The main energy-absorption mechanisms for impact at low velocity (i.e. below the perforation velocity) are related to the elastic deformation of fibres and shear plugging, whereas when a higher impact velocity is considered (i.e. above the perforation velocity) such mechanisms are related to the acceleration field of the laminate and the shear plugging.

show abstract

Section: Analytical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of shear plugging in the energy absorbed by thin carbon-fibre laminates subjected to high-velocity impacts

Buitrago

García-Castillo

Barbero

2013

Composites Part B: Engineering

View full text Add to dashboard Cite

show abstract

“…Naik et al [4] defined three classification of low, high and hypervelocity. For low velocity, the definition given is "if the contact period of impactor is longer than the time period of the lowest vibrational mode".…”

Section: Literature Surveymentioning

confidence: 99%

Design, Fabrication and Testing Of High Velocity Measuring Devices Used In Bird/Ice Pellet Canister Launcher Setup

Khan¹,

Safiulla²

2014

IJIRSET

View full text Add to dashboard Cite

Velocity of projectiles plays an important role in determining the response and behaviour of a target under impact. In this project metallic canister with a soft projectile, which is one of the critical dynamic components, is used to launch bird/ice pellet, to study its influence on the behaviour of aircraft and aero-engine parts. This is done by using conventional compressed air launcher which launches the projectile velocities up to 200 m/s. The canisters which house the test projectile collapse against canister arrester located at the delivery end of the launcher. The collapse characteristics of the canisters are dependent on the geometry of the tip of the arresters, material of the canisters, the shape of the canisters and the heat treatment process adapted for canisters. The impact load of the canister on the arrester can be up to several tonnes axially. This force is a function of the collapsibility of the canister at impact and in turn it is determined by the operating pressure of the launcher. It is therefore necessary to develop a velocity measuring system, which determines the dynamic axial loads on the launcher as well as the target plate, which in turn helps in studying the collapsibility parameter of the canister itself.In order to measure the high velocity of the projectile three measuring devices, namely, optical laser sensor, based on programmable logic device, copper wire and graphite rod based devices are developed and used. To provide adequate redundancy for the complex, highly dynamic and costly impact tests, two of these three velocity measuring devices are used simultaneously: (1) copper wire based sensing system and (2) graphite rod based sensing system. The measuring device input parameter is fabricated on a gun barrel with acrylic fixture at two positions at a distance of 1 m before the arrester where the canister strikes and collapses. At initial and final position, optical transmitter and receiver give the delay time when the canister passes through it by obstructing the sensing signal path. The copper wire circuit based device gives open circuit delay between the two points when canister breaks it. The time taken to travel 1m distance by the canister in the gun barrel is obtained from the device and the velocity of the canister or projectile is experimentally evaluated.

show abstract

“…The complexity of the damage makes it difficult to assess the precise mechanisms controlling strength reduction. Among these modes of impact damage, delamination has the most detrimental effects on laminate stiffness and strength, and has received a considerable amount of attention [5][6][7][8][9]. High velocity impact involves projectiles moving at higher velocities such that the local target materials behave like fluids, and the stress induced by the impact is many times the material strength.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Stacking Sequence Layers of Hybrid Composite Materials in Energy Absorption under the High Velocity Ballistic Impact Conditions: An Experimental Investigation

Randjbaran¹

2013

J Material Sci Eng

View full text Add to dashboard Cite

Composite structures under ballistic impact

Cited by 285 publications

References 20 publications

Influence of shear plugging in the energy absorbed by thin carbon-fibre laminates subjected to high-velocity impacts

Influence of shear plugging in the energy absorbed by thin carbon-fibre laminates subjected to high-velocity impacts

Design, Fabrication and Testing Of High Velocity Measuring Devices Used In Bird/Ice Pellet Canister Launcher Setup

The Effects of Stacking Sequence Layers of Hybrid Composite Materials in Energy Absorption under the High Velocity Ballistic Impact Conditions: An Experimental Investigation

Contact Info

Product

Resources

About