Details
| Original language | English |
|---|---|
| Pages (from-to) | 503-508 |
| Number of pages | 6 |
| Journal | Procedia CIRP |
| Volume | 122 |
| Early online date | 7 May 2024 |
| Publication status | Published - 2024 |
| Event | 31st CIRP Conference on Life Cycle Engineering, LCE 2024 - Turin, Italy Duration: 19 Jun 2024 → 21 Jun 2024 |
Abstract
Thread galling and seizure is a major impediment to the disassembly of bolted joints. The near-locking of the joint can result in damage to or even breakage of parts of the bolt when a seized bolt is unscrewed. In maintenance, repair, and overhaul (MRO) of complex capital goods such as aircraft engines, seized bolts result in additional disassembly and repair work. Especially in the aircraft engine's hot-section, joints are vulnerable to seizure and galling due to material pairing and thermal conditions. Extensive investigation of the disassembly of joints seized during operation may not be implemented during maintenance orders. The manufacturer's specifications and aviation safety authorities only permit predetermined tools. Therefore, artificial samples are needed to perform fundamental experiments. In this article, a model for artificially and reproducibly replicating seized bolted joints is presented. By adding and adjusting an external clamping force on the thread, the loosening torque can be adjusted as a function of the additional forces. The statistical evaluation of performed experiments will validate the assumed relationship between clamping force and loosening torque. Therefore, this model provides the basis for further disassembly studies by providing artificial and reproducible samples.
Keywords
- Disassemby, Modeling, Threaded Fasteners
ASJC Scopus subject areas
- Engineering(all)
- Control and Systems Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Procedia CIRP, Vol. 122, 2024, p. 503-508.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Development and Validation of a Model for Operationally Seized Bolted Joints for the Research on Gentle Bolt Disassembly
AU - Blümel, Richard
AU - Raatz, Annika
N1 - Publisher Copyright: © 2024 Elsevier B.V.. All rights reserved.
PY - 2024
Y1 - 2024
N2 - Thread galling and seizure is a major impediment to the disassembly of bolted joints. The near-locking of the joint can result in damage to or even breakage of parts of the bolt when a seized bolt is unscrewed. In maintenance, repair, and overhaul (MRO) of complex capital goods such as aircraft engines, seized bolts result in additional disassembly and repair work. Especially in the aircraft engine's hot-section, joints are vulnerable to seizure and galling due to material pairing and thermal conditions. Extensive investigation of the disassembly of joints seized during operation may not be implemented during maintenance orders. The manufacturer's specifications and aviation safety authorities only permit predetermined tools. Therefore, artificial samples are needed to perform fundamental experiments. In this article, a model for artificially and reproducibly replicating seized bolted joints is presented. By adding and adjusting an external clamping force on the thread, the loosening torque can be adjusted as a function of the additional forces. The statistical evaluation of performed experiments will validate the assumed relationship between clamping force and loosening torque. Therefore, this model provides the basis for further disassembly studies by providing artificial and reproducible samples.
AB - Thread galling and seizure is a major impediment to the disassembly of bolted joints. The near-locking of the joint can result in damage to or even breakage of parts of the bolt when a seized bolt is unscrewed. In maintenance, repair, and overhaul (MRO) of complex capital goods such as aircraft engines, seized bolts result in additional disassembly and repair work. Especially in the aircraft engine's hot-section, joints are vulnerable to seizure and galling due to material pairing and thermal conditions. Extensive investigation of the disassembly of joints seized during operation may not be implemented during maintenance orders. The manufacturer's specifications and aviation safety authorities only permit predetermined tools. Therefore, artificial samples are needed to perform fundamental experiments. In this article, a model for artificially and reproducibly replicating seized bolted joints is presented. By adding and adjusting an external clamping force on the thread, the loosening torque can be adjusted as a function of the additional forces. The statistical evaluation of performed experiments will validate the assumed relationship between clamping force and loosening torque. Therefore, this model provides the basis for further disassembly studies by providing artificial and reproducible samples.
KW - Disassemby
KW - Modeling
KW - Threaded Fasteners
UR - http://www.scopus.com/inward/record.url?scp=85193550829&partnerID=8YFLogxK
U2 - 10.1016/j.procir.2024.01.073
DO - 10.1016/j.procir.2024.01.073
M3 - Conference article
AN - SCOPUS:85193550829
VL - 122
SP - 503
EP - 508
JO - Procedia CIRP
JF - Procedia CIRP
SN - 2212-8271
T2 - 31st CIRP Conference on Life Cycle Engineering, LCE 2024
Y2 - 19 June 2024 through 21 June 2024
ER -