Blar i NTNU Open på forfatter "Dey, Sumita"
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Ballistic impact on concrete slabs: An experimental and numerical study
Kristoffersen, Martin; Toreskås, Oda Lunde; Dey, Sumita; Børvik, Tore (Peer reviewed; Journal article, 2021)The ballistic perforation resistance of 50 mm thick concrete slabs impacted by 20 mm diameter ogive-nose steel projectiles is investigated experimentally and numerically. Three commercially produced concretes with nominal ... -
Ballistic perforation resistance of plain and reinforced concrete slabs - An experimental and numerical study
Jacobsen, Øystein Eirik Kvist; Børvik, Tore; Kristoffersen, Martin; Dey, Sumita (Chapter, 2023)As concrete is the most used construction material globally, it is vital to understand how this complex composite material behaves when subjected to extreme and potentially devastating loads like explosions or ballistic ... -
Ballistic perforation resistance of thin concrete slabs impacted by ogive-nose steel projectiles
Kristoffersen, Martin; Toreskås, Oda Lunde; Dey, Sumita; Børvik, Tore (Peer reviewed; Journal article, 2021)Concrete is a material frequently used in protective structures exposed to extreme loading. In this study, the ballistic perforation resistance of 50 mm thick plain concrete slabs impacted by 20 mm diameter ogive-nose steel ... -
Experimental Tests and Numerical Simulations on the Ballistic Impact Response of a Highly Inhomogeneous Aluminium Foam
Brekken, Kristoffer Aune; Vestrum, Ole; Dey, Sumita; Reyes, Aase; Børvik, Tore (Peer reviewed; Journal article, 2022)A sandwich structure is a composite material consisting of thin skins encapsulating a cellular core. Such structures have proven to be excellent energy absorbents and are frequently found in various types of protection. ... -
High-strength Steel Plates subjected to Projectile Impact: An experimental and numerical Study
Dey, Sumita (Doktoravhandlinger ved NTNU, 1503-8181; 2004:38, Doctoral thesis, 2004)The present thesis involves research on the ballistic penetration and perforation of steel plates, where the overall goal is to increase the physical understanding of the different phenomena taking place during this type ... -
On the ballistic perforation resistance of a sandwich structure with aluminium skins and aluminium foam core
Brekken, Kristoffer Aune; Bakk, Maria S.; Dey, Sumita; Berstad, Torodd; Reyes, Aase; Børvik, Tore (Peer reviewed; Journal article, 2023)Sandwich structures have proven to be excellent energy absorbents and are found in various protective solutions. In this study, an inhomogeneous aluminium foam was used as core material in a sandwich panel with skins of ... -
On the dynamic response of laminated glass exposed to impact before blast loading
Osnes, Karoline; Dey, Sumita; Hopperstad, Odd Sture; Børvik, Tore (Journal article; Peer reviewed, 2019)In this study, the effect of fragment or bullet impact before blast loading on laminated glass is studied experimentally. First, laminated windows consisting of two 3.8 mm thick annealed float glass plates and a 1.52 mm ... -
Penetration of granular materials by small-arms bullets
Børvik, Tore; Dey, Sumita; Olovsson, L (Journal article; Peer reviewed, 2015)This paper presents an experimental and numerical study on the penetration of granular materials by small-arms bullets. In the experimental tests, five different types of granular material (0–2 mm wet sand, 0–2 mm dry sand, ... -
Projectile Impact on Plain and Reinforced Concrete Slabs
Jacobsen, Øystein Eirik Kvist; Kristoffersen, Martin; Dey, Sumita; Børvik, Tore (Peer reviewed; Journal article, 2023)Reinforced concrete is a material frequently used in protective structures and infrastructure exposed to extreme loading. In this study, the ballistic perforation resistance of 100 mm thick plain and reinforced concrete ...