Study on low and high strain rate behaviour of the adhesive bonds for armour application

Ahmed, Aisha; Chouhan, Hemant; Kartikeya, Kartikeya; Bhatnagar, Naresh

doi:10.1080/00218464.2019.1696195

Cited by 6 publications

(4 citation statements)

References 16 publications

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“…For the bonding of UHMWPE with B/PEI, a suitable grade of PU (Araldite® 2018, Huntsman International LLC) as recommended in the literature was used. [ 49 ] Details of composite specimens to be tested under high strain rate testing are given in Table 3. The weight and volume fraction of the B/PEI composite was calculated by burn‐off test as per ASTM D 2584 and presented in Table 4.…”

Section: Methodsmentioning

confidence: 99%

“…[ 20,52–54 ] The compressive high strain rate properties including stress ( σ ), strain ( ε ) and strain rate (

\overset{ϵ}{true}

) were calculated in accordance with the propagation of one‐dimensional elastic wave as discussed in the literature and given by Equations (1–3). [ 20,49,53,55,56 ]

σ goodbreak= \frac{E_{b} A_{b}}{A_{s}} ε_{t} ((), t)

ϵ = \frac{- 2 C_{e}}{L_{s}} {falsefalse}_{\int}^{0} ε_{r} ((), t) italicdt

\overset{ϵ}{true} goodbreak= \frac{- 2 C_{e}}{L_{s}} ε_{r} ((), t)

where E b is the modulus of the bar, A b is the cross‐sectional area of the bar, A s is the cross‐sectional area of the specimen, C e is the wave velocity in the bar, L s is the length of the specimen, ε r ( t ) reflected strain gauge signal and ε t ( t ) is the transmission strain gauge signal.…”

Section: Methodsmentioning

confidence: 99%

“…[20,[52][53][54] The compressive high strain rate properties including stress (σ), strain (ε) and strain rate ( _ ϵ) were calculated in accordance with the propagation of one-dimensional elastic wave as discussed in the literature and given by Equations (1-3). [20,49,53,55,56] σ…”

Section: Test Set-up For Rate-dependent Testingmentioning

confidence: 99%

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An experimental investigation into the mechanical behavior of UHMWPE and basalt polyetherimide bonded composites at high strain rates

et al. 2022

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Material systems capable of handling both the ballistic impact and blast waves are necessary for security forces. In this study, the high strain rate performance of monolithic and bonded ultra-high molecular weight polyethylene (UHMWPE) with high-temperature resistant basalt/polyetherimide (B/PEI) composite is presented. Individual composite laminates were fabricated using vacuum-assisted compression molding. Subsequently, cylindrical test coupons were cut using a high-pressure waterjet. A suitable adhesive grade was used for the bonding of two different composite types. The dynamic compression studies were conducted on a split-Hopkinson pressure bar (SHPB). For identical incident energies, the range of strain rates attained by monolithic UHMWPE, B/PEI and bonded composites differed significantly. Monolithic UHMWPE achieved the highest rates of loading, whereas higher stresses were recorded for the B/PEI composite. Yet, monolithic UHMWPE, owing to higher constant stress plastic flow, results in higher toughness. Bonded composites revealed hybrid properties with delamination of UHMWPE as the primary failure mode. High-speed imaging exposed severe deformation of UHMWPE during dynamic compression. SEM micrographs revealed fiber pull-out and deforming behavior of UHMWPE and brittle failure of B/PEI composite. B/PEI in a bonded composite system never failed under dynamic compression within the experimental range, thus providing a window of opportunity to tailor-make better ballistic and blast protection materials.

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Section: Methodsmentioning

confidence: 99%

“…[ 20,52–54 ] The compressive high strain rate properties including stress ( σ ), strain ( ε ) and strain rate (

\overset{ϵ}{true}

) were calculated in accordance with the propagation of one‐dimensional elastic wave as discussed in the literature and given by Equations (1–3). [ 20,49,53,55,56 ]

σ goodbreak= \frac{E_{b} A_{b}}{A_{s}} ε_{t} ((), t)

ϵ = \frac{- 2 C_{e}}{L_{s}} {falsefalse}_{\int}^{0} ε_{r} ((), t) italicdt

\overset{ϵ}{true} goodbreak= \frac{- 2 C_{e}}{L_{s}} ε_{r} ((), t)

Section: Methodsmentioning

confidence: 99%

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An experimental investigation into the mechanical behavior of UHMWPE and basalt polyetherimide bonded composites at high strain rates

et al. 2022

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“…TPU and epoxy are two typical representative adhesives of thermoplastic, and thermoset adhesives, respectively. Researches [ 9 , 10 , 11 ] presented that the ceramic tiles bonded by TPU did not fall off after the impact, while the ceramic tiles bonded by epoxy all fell off. However, after the penetration of the projectile, the structure bonded with epoxy has a more significant effect on the crushing of the projectile since the epoxy has better support for ceramic than TPU.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Interlayer Materials on Ceramic Damage in SiC/Al Composite Structure

Bao

Wang

et al. 2020

Materials

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The effect of interlayer materials on the damage of ceramics in the SiC/Al compositestructure was analyzed through experiments and simulation. Using 0.25 mm thermoplasticpolyurethane (TPU) as a reference, a 0.5 mm aramid fabric (AFRP) or a 0.5 mm carbon fiberreinforced epoxy matrix composite (CFRP) was added to the interlayer, respectively. Through theimpact tests, it was discovered that the ceramic damaged area in the TPU composite structure wassevere. With the addition of AFRP, the damaged area of the ceramic layer was reduced by 73%under the same impact conditions. The addition of CFRP also reduced the damage of ceramics. Theevolution process of the tensile stress on the ceramic rear surface was presented by simulation. Thetensile evolution process analysis can explain the experimental phenomenon well and can be usedto predict the damage of the ceramics.

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Natural Fibre-Reinforced Composite for Ballistic Applications: A Review

et al. 2021

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Study on low and high strain rate behaviour of the adhesive bonds for armour application

Cited by 6 publications

References 16 publications

An experimental investigation into the mechanical behavior of UHMWPE and basalt polyetherimide bonded composites at high strain rates

An experimental investigation into the mechanical behavior of UHMWPE and basalt polyetherimide bonded composites at high strain rates

The Effect of Interlayer Materials on Ceramic Damage in SiC/Al Composite Structure

Natural Fibre-Reinforced Composite for Ballistic Applications: A Review

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