The performance during four stationary knife attacks: Implications for tactical training

Kantor, Michael A.; Lewinski, William J.; Reiner, Susannah; Pettitt, Robert W.

doi:10.1016/j.forsciint.2022.111371

Forensic Science International

2022

DOI: 10.1016/j.forsciint.2022.111371

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The performance during four stationary knife attacks: Implications for tactical training

Michael A. Kantor

William J. Lewinski²,

Susannah Reiner

et al.

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2024

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Cited by 2 publications

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“…They suggest that the force required in any stabbing process is influenced by the following factors: the radius of the weapon tip, the minimum force required for penetration, the sex of the aggressor, and its hand (dominant or nondominant). The variability of the factors involved in the stabbing process has also been studied in [63][64][65]. The forces achieved by the volunteers are lower than the forces recorded for the destructing samples using energies recommended in the standards A study published in 2018 [61] shows that forces generated by volunteers in mild, moderate, and severe stabbing tests were, in almost all cases, significantly greater than the forces required for skin penetration.…”

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confidence: 99%

The Behaviour of Stratified Fabrics of Aramid Fibres under Stabbing Conditions

Deleanu,

Totolici Rusu,

Ojoc

et al. 2024

Polymers

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This paper presents research on several factors influencing the stabbing behaviour of stratified panels made of aramid fabric Twaron® SRM509 Teijin Aramid BV (Arnhem, The Netherlands). The inputs in the test campaign were the number of layers, the impact energy, and the sample size. Tests were performed on small samples (130 mm × 130 mm) on an Instron® CEAST 9350 drop-tower impact system (Norwood, MA, USA) and on larger samples (400 mm × 400 mm) using a test installation with the same values of the impact energy. Knife type S1 was used, with the geometry recommended in NIJ Standard 0115.00 Stab Resistance of Body Armor SEM, and macro photography investigations revealed the failure mechanisms of panel, layers and fibres. A very important conclusion of this study regarding the stabbing performance of fabric Twaron® SRM 509 in particular, but also in general for panels for body protection is that a research study could start on small size samples, with an accurately instrumented machine, in order to establish the influence of significant factors of stab resistance (energy level, number of layers in a panel, etc.), as these samples are less expensive and less time consuming, but the study should be continued to examine larger size samples. The obtained data are useful for the prototype.

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mentioning

confidence: 99%

The Behaviour of Stratified Fabrics of Aramid Fibres under Stabbing Conditions

Deleanu,

Totolici Rusu,

Ojoc

et al. 2024

Polymers

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Biomechanics of stabbing knife attack for trauma surgeons in Korea: a narrative review

Hwang,

Park

2024

J Trauma Inj

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The aim of this paper was to review the biomechanics of knife injuries, including those that occur during stabbing rampages. In knife stab attacks, axial force and energy were found to be 1,885 N and 69 J, respectively. The mean velocity of a stabbing motion has been reported to range from 5 to 10 m/sec, with knife motions occurring between 0.62 and 1.07 seconds. This speed appears to surpass the defensive capabilities of unarmed, ordinarily trained law enforcement officers. Therefore, it is advisable to maintain a minimum distance of more than an arm's length from an individual visibly armed with a knife. In training for knife defense, particularly in preparation for close-quarter knife attacks, this timing should be kept in mind. Self-inflicted stab wounds exhibited a higher proportion of wounds to the neck and abdomen than assault wounds. Injuries from assault wounds presented a higher Injury Severity Score, but more procedures were performed on self-inflicted stab wounds. Wound characteristics are not different between nonsuicidal self-injury and suicidal self-wrist cutting injuries. Consequently, trauma surgeons cannot determine a patient's suicidal intent based solely on the characteristics of the wound. In Korea, percent of usage of lethal weapon is increasing. In violence as well as murders, the most frequently used weapon is knife. In the crimes using knife, 4.8% of victims are killed. Therefore, the provision of prehospital care by an emergency medical technician is crucial.

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The performance during four stationary knife attacks: Implications for tactical training

Cited by 2 publications

References 12 publications

The Behaviour of Stratified Fabrics of Aramid Fibres under Stabbing Conditions

The Behaviour of Stratified Fabrics of Aramid Fibres under Stabbing Conditions

Biomechanics of stabbing knife attack for trauma surgeons in Korea: a narrative review

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