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The Spb method used to estimate crack extension for coiled tubings fracture toughness tests
(Pergamon-Elsevier Science Ltd, 2017-06)
Coiled tubings are widely used in oil and gas industries. Fracture toughness test of coiled tubing is a challenge. Non-standard specimen has to be used due to its geometrical difficulties, ie small thickness and diameter. ...
Analysis of the Spb method for geometries where ηpl depends on a/W
(Elsevier, 2021-01)
Since its proposal, the simplified Spb method has been successfully applied to the fracture toughness evaluation of metallic and polymer materials. However, some points of this methodology remain unclear, like the applicability ...
Load-separation method, Spb, used to estimate crack extension for J-R curves, modified for geometric variations in blunt-notched remaining ligament
(American Society Testing Materials, 2017-07)
The Spb method estimates stable crack growth in fracture mechanics precracked specimens test. It compares the load ratio between a precracked specimen that exhibits stable crack growth and a blunt-notched specimen with ...
Influence of the calibration points on the Spb parameter behavior
(American Society Testing Materials, 2007-01)
The present work studies the separability parameter Spb behavior to estimate crack lengths when two or three calibration points are used. A set of precracked and blunt notched specimens with three-point bend ASTM-SE(B) ...
A entrada do Pix no sistema de pagamentos do Brasil e o cenário para a Caixa Econômica Federal
(2021-11-18)
O texto discorre sobre a história dos meios de pagamentos, desde os tempos primitivos, quando a moeda era um meio de troca, passando pelos importantes marcos a exemplo de: o entendimento do dinheiro como um sistema de ...
Assessment of sorption capability of montmorillonite clay for lead removal from water using laser–induced breakdown spectroscopy and atomic absorption spectroscopy
(Elsevier Science, 2019-01)
Laser-induced breakdown spectroscopy (LIBS) and atomic absorption spectroscopy (AAS) techniques were applied for quantitative analysis of the remaining Pb content in water samples after treatment with a raw montmorillonite ...