ABSTRACT This paper summarizes the NIMS fatigue data sheets and makes a new gateway available to access them. The NIMS fatigue data sheets are a huge database of the fatigue properties of structural materials. This project covers fundamental fatigue properties at room temperature and at high temperatures, and the fatigue properties of welded joints. The fundamental fatigue properties recorded include high-cycle, low-cycle and gigacycle fatigue test results for steels, aluminium alloys, titanium alloys and so on. The high-cycle fatigue test results determine the fatigue limits. The low-cycle fatigue test results reveal not only the fatigue lives but also cyclic stress-strain curves. The gigacycle fatigue tests were conducted at 100 Hz for three years up to 1010 cycles, as well as at 20 kHz for a week. The fatigue properties at high temperatures were evaluated chiefly for steels, via low and high-cycle fatigue tests. The low-cycle fatigue tests were conducted by employing various strain rates and waveforms. The fatigue properties of welded joints were evaluated using thick plates of steels and aluminium alloys, conducting high-cycle fatigue and crack propagation tests employing large specimens in as-welded condition. The high-cycle fatigue tests were conducted using various specimen sizes, welding procedures, stress ratios and so on. The crack propagation tests were conducted for the base metal, the weld metal and the heat-affected zone. Many new findings were obtained with these fatigue data as reviewed in this paper. GRAPHICAL ABSTRACT

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NIMS 疲劳数据表目录

摘要 本文总结了 NIMS 疲劳数据表，并提供了一个新的网关来访问它们。NIMS 疲劳数据表是一个庞大的结构材料疲劳特性数据库。该项目涵盖了室温和高温下的基本疲劳特性，以及焊接接头的疲劳特性。记录的基本疲劳性能包括钢、铝合金、钛合金等的高周、低周和千兆周疲劳试验结果。高周疲劳试验结果决定了疲劳极限。低周疲劳试验结果不仅揭示了疲劳寿命，还揭示了循环应力应变曲线。千兆周疲劳测试在 100 Hz 下进行了三年，最多 1010 次循环，以及在 20 kHz 下进行了一周。高温下的疲劳性能主要通过低周和高周疲劳试验对钢进行评估。低周疲劳试验采用各种应变率和波形进行。焊接接头的疲劳性能使用厚钢板和铝合金进行评估，在焊接状态下使用大型试样进行高周疲劳和裂纹扩展试验。使用各种试样尺寸、焊接工艺、应力比等进行高周疲劳试验。对母材、焊缝金属和热影响区进行裂纹扩展试验。如本文所述，通过这些疲劳数据获得了许多新发现。图形概要 低周疲劳试验采用各种应变率和波形进行。焊接接头的疲劳性能使用厚钢板和铝合金进行评估，在焊接状态下使用大型试样进行高周疲劳和裂纹扩展试验。使用各种试样尺寸、焊接工艺、应力比等进行高周疲劳试验。对母材、焊缝金属和热影响区进行裂纹扩展试验。如本文所述，通过这些疲劳数据获得了许多新发现。图形概要 低周疲劳试验采用各种应变率和波形进行。焊接接头的疲劳性能使用厚钢板和铝合金进行评估，在焊接状态下使用大型试样进行高周疲劳和裂纹扩展试验。使用各种试样尺寸、焊接工艺、应力比等进行高周疲劳试验。对母材、焊缝金属和热影响区进行裂纹扩展试验。如本文所述，通过这些疲劳数据获得了许多新发现。图形概要 在焊接状态下使用大型试样进行高周疲劳和裂纹扩展试验。使用各种试样尺寸、焊接工艺、应力比等进行高周疲劳试验。对母材、焊缝金属和热影响区进行裂纹扩展试验。如本文所述，通过这些疲劳数据获得了许多新发现。图形概要 在焊接状态下使用大型试样进行高周疲劳和裂纹扩展试验。使用各种试样尺寸、焊接工艺、应力比等进行高周疲劳试验。对母材、焊缝金属和热影响区进行裂纹扩展试验。如本文所述，通过这些疲劳数据获得了许多新发现。图形概要