Enhancements    

A GUIDELINE FOR THE ASSESSMENT OF UNIAXIAL CREEP AND CREEP-FATIGUE DATA MODELS

A GUIDELINE FOR THE ASSESSMENT OF UNIAXIAL CREEP AND CREEP-FATIGUE DATA MODELS
PI: Calvin Stewart
Co-PI: John Chessa
Sponsor: US DEPARTMENT OF ENERGY
Center for Space Exploration Technology Research (CSETR)
Amount awarded: $250,000

The first research objective (RO1) is to develop an aggregated database of creep and creep-fatigue validation data from existing datasets for P91 steel and 316 stainless steel. An extensive database of creep, stress relaxation, monotonic tensile, fatigue , and creep-fatigue experimental data will be collected. The second research objective is to employ the RO1 database to benchmark existing creep and creep-fatigue models in a variety of finite element models. RO2 will involve the investigation into the data fitting and parameter extraction using both analytical as well as a novel multi-objective optimization approach (MACHO). Using the guidelines resulting from RO1 and RO2, a component designer will be able to easily select the best constitutive model(s) and experimental datasets for an intended design.

Posting date: Thu, 08/11/2016

Award start date: Thu, 09/01/2016
Award end date: Sat, 08/31/2019