Details
| Original language | English |
|---|---|
| Pages (from-to) | 754-757 |
| Number of pages | 4 |
| Journal | Procedia CIRP |
| Volume | 111 |
| Early online date | 6 Sept 2022 |
| Publication status | Published - 2022 |
| Externally published | Yes |
| Event | 12th CIRP Conference on Photonic Technologies, LANE 2022 - Erlangen, Germany Duration: 4 Sept 2022 → 8 Sept 2022 |
Abstract
With an estimated amount of about 1.6 metric million tons, unexploded ordnances (UXO) in the German North and Baltic Sea pose a serious threat to the environment due to increasing corrosion. One way to allow safe salvage of the objects from the sea is to weaken them and then disarm them by low order detonation. This paper deals with the weakening by laser ablation, aiming for the introduction of ablation gaps with a depth of 2/3 the material thickness in 4 and 10 mm thick mild steel samples. An Yb:YAG laser source is used with a laser power of up to 2 kW in combination with a coaxial gas jet supplying the process zone with nitrogen to ensure a controllability of the process and the depth of the gap. The study is thus focused on achieving constant and predictable gap depths.
Keywords
- deflagration, laser ablation, underwater, uxo
ASJC Scopus subject areas
- Engineering(all)
- Control and Systems Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: Procedia CIRP, Vol. 111, 2022, p. 754-757.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Underwater laser ablation process using an Yb:YAG laser source for the weakening of mild steel sheets for the deflagration of hazardous substances
AU - Leschke, Jan
AU - Emde, Benjamin
AU - Hermsdorf, Jörg
AU - Overmeyer, Ludger
N1 - Funding Information: The project underlying this report was funded by the Federal Ministry of Economic Affairs and Climate Action under founding reference 03SX550. We would like to thank all funding organizations.
PY - 2022
Y1 - 2022
N2 - With an estimated amount of about 1.6 metric million tons, unexploded ordnances (UXO) in the German North and Baltic Sea pose a serious threat to the environment due to increasing corrosion. One way to allow safe salvage of the objects from the sea is to weaken them and then disarm them by low order detonation. This paper deals with the weakening by laser ablation, aiming for the introduction of ablation gaps with a depth of 2/3 the material thickness in 4 and 10 mm thick mild steel samples. An Yb:YAG laser source is used with a laser power of up to 2 kW in combination with a coaxial gas jet supplying the process zone with nitrogen to ensure a controllability of the process and the depth of the gap. The study is thus focused on achieving constant and predictable gap depths.
AB - With an estimated amount of about 1.6 metric million tons, unexploded ordnances (UXO) in the German North and Baltic Sea pose a serious threat to the environment due to increasing corrosion. One way to allow safe salvage of the objects from the sea is to weaken them and then disarm them by low order detonation. This paper deals with the weakening by laser ablation, aiming for the introduction of ablation gaps with a depth of 2/3 the material thickness in 4 and 10 mm thick mild steel samples. An Yb:YAG laser source is used with a laser power of up to 2 kW in combination with a coaxial gas jet supplying the process zone with nitrogen to ensure a controllability of the process and the depth of the gap. The study is thus focused on achieving constant and predictable gap depths.
KW - deflagration
KW - laser ablation
KW - underwater
KW - uxo
UR - http://www.scopus.com/inward/record.url?scp=85141896470&partnerID=8YFLogxK
U2 - 10.1016/j.procir.2022.08.119
DO - 10.1016/j.procir.2022.08.119
M3 - Conference article
AN - SCOPUS:85141896470
VL - 111
SP - 754
EP - 757
JO - Procedia CIRP
JF - Procedia CIRP
SN - 2212-8271
T2 - 12th CIRP Conference on Photonic Technologies, LANE 2022
Y2 - 4 September 2022 through 8 September 2022
ER -