Customized design and finite element analysis of functions in a tensile test machine
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Oceaneering AS (OAS) is one of the world’s largest ROV service suppliers and a front runner within the subsea inspection and intervention field. OAS acquired a new company called AGR Field Operations late 2011 to increase their inspection capabilities. AGR Field Operations were incorporated as Oceaneering Asset Integrity AS (OAI). OAI want to invest in a new custom tensile test machine (TTM). The TTM will be unveiled at the grand opening of the new OAS facilities on Forus, Stavanger (December 2014). OAI invited four local TTM suppliers to compete for the contract in the end of 2013. The main requirements were a TTM with; 750T rating, an internal test length of 15 meters and an internal test diameter of 1.5 meters. The proposed concepts did not satisfy OAI. OAI decided to hold off on the contract award decision, based on TTM functionality and price. This masters’ thesis was established to develop a concept which should compete alongside with the supplier concepts. The tender process deadline for submitting a concept was mid February (2014). The master thesis concept was submitted within the date set forth by OAI. The thesis concept was the one selected; OAI concluded that the new developments provided an edge compared to existing designs whilst satisfying OAI needs. The original scope of the thesis was to design and perform finite element analysis (FEA) on the three main functions in the TTM. The main functions are; the structure and the two opposing modules inside which transfer load to the tested item. The structure itself is called the main frame and the internal function which applies the load to the tested item is called a force module. The third function scoped by the thesis is the test item restraint function, called a tailstock module. A detailed design was made for all three functions, combined with designs of other supplementary functions. The FEA analysis revealed satisfactory results and gave an insight in how the internal components interact during loading. The overall design process has been extensive. Over a 100 3D components was designed during the thesis period. The designed components and functions are a combination of existing design and new development. The designed functions are products of research and functional analysis. The main focus was to generate a design which facilitates testing of the most frequently tested items, identified during the thesis process. The thesis design process ended in June 2014, followed by a thorough design review. The review concluded that the design of the TTM main functions covered the requirements listed in the invitation to tender (ITT), and additional requirements added during the thesis process. Budget estimates indicate a total price of 4.5 million NOK for the thesis TTM, while the preferred supplier concept had a fixed price of 6.2 million NOK. The TTM project will be given additional resources to finish the detail design within the end of July. The drafting and production process will be initiated when the final design is definite. The overall thesis output was classified as a success and OAI want the thesis writer (Torleif Carlsen) to be the technical project manager for the remainder of the project. The established design and the calculations presented through the thesis is constructed by the thesis writer, with guidance from; OAS, OAI and UIS.
Master's thesis in Industrial economics *KAR OK KONF juni 2016*