Fracture toughness of selective laser sintering Polyamide 12: Evaluation of failure criteria using Bayesian analysis

被引：0

作者：

Gomez, F. J. ^{[1
]}

Gomez-del-Rio, T. ^{[2
]}

Rodriguez, J. ^{[2
,3
]}

机构：

[1] Adv Mat Simulat S L, C Elcano 14, Bilbao 48008, Spain

[2] Rey Juan Carlos Univ, Durabil & Mech Integr Struct Mat, Tulipan S-N, Mostoles 28933, Madrid, Spain

[3] Univ Rey Juan Carlos, Inst Invest Tecnol Sostenibil, C Tulipan S-N, Mostoles 28933, Madrid, Spain

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2025年 / 35卷

关键词：

Fracture toughness; Stress intensity factor; U; -notches; Failure criteria; Bayesian analysis; COHESIVE ZONE; STRAIN-ENERGY; MECHANICS; STRESS; STRENGTH; BEHAVIOR; PREDICT; ONSET; SIZE;

D O I：

10.1016/j.jmrt.2025.03.019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A methodology is proposed to assess the effectiveness of various models used for predicting the fracture toughness of polyamide 12 manufactured by selective laser sintering with U-notches, considering two different orientations of the 3D deposition direction. Specifically, six failure criteria have been examined, including the Theory of Critical Distances, the Cohesive Zone Model with linear softening curve, the Strain Energy Density Criterion, the Finite Fracture Mechanics and a phenomenological model. Bayesian statistical techniques have been used to evaluate their performance against experimental data. A comprehensive comparison, considering both parameter and model uncertainties, has been accounted for all six models.

引用

页码：7384 / 7392

页数：9

共 44 条

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