{"product_id":"ng-18-104-r01-the-magnitude-and-effects-of-residual-stresses-in-line-pipe-1","title":"NG-18-104-R01 The Magnitude and Effects of Residual Stresses in Line Pipe","description":"\u003cp\u003eThe tendency of rings of line pipe to open or close upon being longitudinally severed results from circumferential residual stresses in the pipe. The objectives of this work was to:\u003c\/p\u003e \n\n\u003cp\u003e(1) To determine the nature and magnitude of the residual stresses which cause ring-opening and ring-closing in line pipe.\u003c\/p\u003e\n\n\u003cp\u003e(2) To determine the quickest and simplest way to measure such residual stresses.\u003c\/p\u003e\n\n\u003cp\u003e(3) To determine the effect of the residual stresses on the fracture initiation and propagation behavior of the line pipe.\u003c\/p\u003e\n\n\u003cp\u003e(4) To determine whether or not ring-opening or ring-closing residual stresses could be a useful means when intentionally induced in the pipe to improve its resistance to fracture initiation and propagation.\u003c\/p\u003e\n\n\u003cp\u003eWith these objectives in mind the scope of the research program was defined to include:\u003c\/p\u003e\n\n \u003cp\u003e- A theoretical analysis of the forces and stresses producing ring-opening and ring-closing deflections\u003c\/p\u003e\n\n \u003cp\u003e- Experimental determination of ring-opening and ring-closing residual stresses in typical line pipe materials\u003c\/p\u003e\n\n \u003cp\u003e- Full-scale fracture initiation experiments to determine the effects of residual stresses on the failure stress levels of defects\u003c\/p\u003e\n\n \u003cp\u003e- Fracture propagation experiments on short vessels filled partly with water to determine the effects of residual stresses on the ductile fracture propagation characteristics of the line pipe.\u003c\/p\u003e","brand":"PRCI Store","offers":[{"title":"Default Title","offer_id":44361879552078,"sku":"196726","price":1500.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/prci-store.myshopify.com\/products\/ng-18-104-r01-the-magnitude-and-effects-of-residual-stresses-in-line-pipe-1","provider":"PRCI Store","version":"1.0","type":"link"}