On the Possibility of Adding a Repeatability Requirement for the Indirect Verification of Charpy Machines in ASTM E23 [0.03%]
关于在ASTM E23中增加间接验证夏比试验机重复性要求的可能性研究
Enrico Lucon
Enrico Lucon
Since 1989, the National Institute of Standards and Technology (NIST) Charpy Machine Verification Program in Boulder, Colorado, has been indirectly verifying Charpy machines around the world according to ASTM E23, Standard Test Methods for ...
Review and Consideration of Apparent Negative Crack Growth in Fracture Toughness Tests [0.03%]
裂纹增长速率的评估及脆断试验中的负增长现象探讨
Enrico Lucon
Enrico Lucon
Apparent negative crack growth is often encountered when performing elastic-plastic fracture toughness tests with the Elastic Compliance single-specimen technique. It consists of a decrease of specimen compliance (reduction of crack size) d...
Effect of Precrack Configuration and Lack-of-Fusion on the Elastic-Plastic Fracture Toughness of Additively Manufactured Ti-6Al-4V parts [0.03%]
裂纹配置和未融合对激光粉末床熔融增材制造Ti-6Al-4V结构件的弹塑性断裂韧性的影响
Enrico Lucon,Jake Benzing,Nikolas Hrabe
Enrico Lucon
A comparison between fatigue precracked and sharp-notched Charpy-type fracture toughness specimens is presented for characterizing the elastic-plastic fracture toughness of Ti-6Al-4V parts (produced by electron beam melting, a powder bed fu...
Investigation of the Interlaminar Shear Properties of Fiber Reinforced Polymers via Flexural Testing using Digital Image Correlation [0.03%]
通过使用数字图像相关技术的弯曲试验研究纤维增强聚合物的层间剪切性能
Matthias Merzkirch,Tim Foecke
Matthias Merzkirch
Determination of the interlaminar properties of laminate composites to date have included a few direct measurement techniques: the standardized short beam test via three-point flexural testing and the double beam shear test via five-point f...
ASTM E08.07.09 Analytical Round-Robin on the Use of DC Electrical Potential Difference for the Measurement of Crack Size in Ductile Fracture Testing [0.03%]
ASTM E08.07.09 延性断裂试验中用电位差测量裂纹尺寸的分析型圆环测试研究报告
E Lucon
E Lucon
The Direct Current Electrical Potential Difference (DCEPD) technique has been used for many years in fatigue and fracture testing for monitoring crack propagation in metallic materials. The principle of DCEPD methods is that when a constant...
Instrumented Impact Testing of Miniaturized Charpy Specimens of AM Ti-6Al-4V [0.03%]
微型夏比试样增材制造Ti-6AL-4V合金的动态仪器冲击试验研究
Enrico Lucon,Nikolas Hrabe
Enrico Lucon
An investigation on the impact toughness properties of wrought and additively manufactured (AM) Ti-6Al-4V was conducted at National Institute for Standards and Technology (NIST) Boulder by means of instrumented impact tests on miniaturized ...