The theoretical approach developed in the companion paper is applied to the temperature signals acquired by using an infrared camera, during step-load fatigue tests carried out on AISI 304L cold-drawn bars. The intrinsic dissipation, calculated according to the analytical model and by means of the discrete Fourier transform of the material temperature, is compared with that measured by using a well-established experimental approach based on the measurement of the cooling gradient of the material temperature, after the fatigue test has been suddenly stopped. The results of this study indicate that the intrinsic dissipation calculated according to the two approaches become increasingly closer to one another for progressively higher applied stress amplitudes.

中文翻译：

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在拉压疲劳中使用温度信号的二次谐波估计本征耗散。第二部分：实验

在对 AISI 304L 冷拔棒材进行阶跃载荷疲劳试验期间，将配套论文中开发的理论方法应用于使用红外摄像机获取的温度信号。根据分析模型并通过材料温度的离散傅立叶变换计算的固有耗散与使用基于材料温度冷却梯度测量的成熟实验方法测量的结果进行比较，之后疲劳测试突然停止。这项研究的结果表明，随着施加的应力幅度逐渐升高，根据两种方法计算的固有耗散变得越来越接近。