Surface Effect Ship Structural Producibility. Part 1.
Abstract
For the purpose of this report the term 'structural producibility' is the effect of the manufacturing process on the design (i.e., a producible design is one that is within the ability of the manufacturing function to fabricate at a specified quality and cost level). The producibility effort was carried out through an extensive aluminum welding, fabrication and repair technique development program; the fabrication and evaluation of the SES-100A1 bow modification and the construction and assembly of the mini-modules representing two small segments of the 3KSES hull. The SES-100A1 modification provided valuable exposure to actual production problems, including dimensional variance due to previously locked-in stresses as well as tolerance build-up and additional induced warpage from weld shrinkage. The mini-module being a representative of actual 3KSES structural elements with truss joints and typical member splices exposed various assembly and weld joint crack problems which required both design and manufacturing development to resolve. In order to develop an overall optimum structural design for the 3KSES, various assembly sequences, welding techniques and joint types were investigated for accessibility, effectiveness of weld preparation and manufacturing techniques and strengths of the joints produced. The accuracy of alignment and fit-up of the various elements, having a direct effect on final assembly strength, was also evaluated to establish overall fabrication requirements.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 14, 1980
- Accession Number
- ADA087436