1.1本规程定义了对无损检测命中/未命中数据进行统计分析的程序，以确定特定检测参数集的证明检测概率（POD）。涵盖的主题包括标准命中/未命中POD曲线公式、验证技术和结果的正确解释。 1.2以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。 本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== 本文所述的POD分析方法基于众所周知和公认的统计方法。当无损评估检测系统的初始响应最终为二元性质（即命中或未命中）时，它应用于量化特定检测参数集和已知不连续尺寸范围的演示POD。该方法要求不连续尺寸和POD之间存在关系，最好用广义线性模型描述，该模型具有适当的二元结果链接函数。 在进行分析之前，假设明确定义了兴趣的不连续性；POD样本集中诱导不连续尺寸的数量和分布是已知的，并有充分的记录；POD样本集中的不连续性是无障碍的；POD检查管理程序（包括数据收集方法）定义明确、可控且无偏见；最初的反应本质上是二元的（即命中或未命中）。只有在达到收敛且模型充分代表数据时，分析结果才有效。 本文描述的POD分析方法与MIL中描述的二进制数据分析方法一致- HDBK-1823A，包含在几个广泛使用的POD软件包中，用于对命中/未命中数据执行POD分析。它也存在于具有广义线性建模能力的统计软件包中。这种做法要求分析员可以使用POD软件或具有广义线性建模能力的其他软件。

1.1 This practice defines the procedure for performing a statistical analysis on nondestructive testing hit/miss data to determine the demonstrated probability of detection (POD) for a specific set of examination parameters. Topics covered include the standard hit/miss POD curve formulation, validation techniques, and correct interpretation of results. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== The POD analysis method described herein is based on a well-known and well established statistical method. It shall be used to quantify the demonstrated POD for a specific set of examination parameters and known range of discontinuity sizes when the initial response from a nondestructive evaluation inspection system is ultimately binary in nature (that is, hit or miss). This method requires that a relationship between discontinuity size and POD exists and is best described by a generalized linear model with the appropriate link function for binary outcomes. Prior to performing the analysis it is assumed that the discontinuity of interest is clearly defined; the number and distribution of induced discontinuity sizes in the POD specimen set is known and well-documented; discontinuities in the POD specimen set are unobstructed; the POD examination administration procedure (including data collection method) is well-defined, under control, and unbiased; and the initial response is ultimately binary in nature (that is, hit or miss). The analysis results are only valid if convergence is achieved and the model adequately represents the data. The POD analysis method described herein is consistent with the analysis method for binary data described in MIL-HDBK-1823A, which is included in several widely utilized POD software packages to perform a POD analysis on hit/miss data. It is also found in statistical software packages that have generalized linear modeling capability. This practice requires that the analyst has access to either POD software or other software with generalized linear modeling capability.