Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Feasibility study on strain based health monitoring and life assessment of gun barrel
| DOI: | 10.11809/bqzbgcxb2024.01.007 |
| Keywords: | gun barrel; erosion and wear; fatigue; life assessment; health monitoring; strain; feasibility |
| Abstract: | Erosion, wear, and fatigue of gun barrel during firing make its performance deteriorate and the gun barrel cannot be used anymore and has to be removed from the service in the end. What is more serious is that occasionally occurred burst of gun barrel poses a threat to the crew and the weapon. There exists potential safety hazard with the gun barrel along its total useful life. Traditional evaluation methods of gun barrel life, including dimension based, graph based, temperature based, muzzle velocity based methods, could not assess the condition of gun barrel and its remaining useful life scientifically and correctly. In order to overcome these specific questions, we investigated the damage mechanism of gun bore and put forward a strain based method to evaluate the health of gun barrel which uses the strain on the exterior surface of the gun barrel as the damage characteristic parameter. The inherent mapping relationship between the strain and the system of projectile gun barrel propellant is disclosed. The principle of the method is explained in detail and how to use this method to assess the remaining useful life is also interpreted. The actual firing data of different types of guns and the numerical simulation results verify the scientific nature, reliability, and practicality of this method. |
| Published: | 2024-01-28 |