1.1 此做法提供: 1.1.1 将区域扫描摄像系统（简称“摄像系统”）设计和集成到激光粉末床聚变（PBF-LB/M）机中以评估扫描仪防护窗（SPW）健康状况的建议， 1.1.2 关于利用上述系统进行数据采集的建议， 1.1.3 处理上述数据的方法说明，以及 1.1.4 适用于标记加工条件数据的激光束参数和零件特性的非原位测量建议。 1.2 本规程中包含的许多操作说明旨在作为一般概述。他们可能没有提供所需的详细信息。 1.3 单位-- 以国际单位制表示的数值应视为标准。本标准中不包括其他计量单位。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ===意义和用途====== 4.1 本规程的总体目标是为系统采集表明磨损健康状况的图像数据提供建议- PBF-LB/M机器中的敏感SPW。这些数据可以允许用户基于SPW的实际健康状况来确定校准和维护周期。 4.2 本建议旨在为PBF-LB/M机器的原始设备制造商（OEM）提供传感器系统的实施指南，以获取有关SPW健康状况的空间解析数据。 4.3 本建议旨在为PBF-LB/M机器的用户提供SPW实际健康状况评估指南，以: 4.3.1 当需要校准或维护光学系统时进行标记，并提醒用户或OEM执行校准或维护，以及 4.3.2 根据长期记录的数据生成SPW的使用寿命或关键健康状态的统计估计。统计数据可用于导出维护周期，该维护周期允许比当前预定维护周期更好地利用SPW的使用寿命。

1.1 This practice provides: 1.1.1 Recommendations for the design and integration of an area scan camera system (referred to as “camera system”) into a laser powder bed fusion (PBF-LB/M) machine to assess the health condition of the scanner protective window (SPW), 1.1.2 Recommendations for data acquisition with the aforementioned system, 1.1.3 Description of a methodology for processing the aforementioned data, and 1.1.4 Recommendation on ex-situ measurements of laser beam parameters and part properties suitable for labeling of the processed condition data. 1.2 Many of the operational descriptions included in this practice are intended as general overviews. They may not present the detailed information required. 1.3 Units— The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard. 1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 The overall objective of this practice is to provide recommendations for the systematic acquisition of image data that indicate the health condition of the wear-sensitive SPW in PBF-LB/M machines. These data may allow a user to determine calibration and maintenance cycles based on the actual health condition of the SPW. 4.2 The recommendations are intended for original equipment manufacturers (OEMs) of PBF-LB/M machines to provide guidance for the implementation of sensor systems to acquire spatially resolved data about the health condition of the SPW. 4.3 The recommendations are intended for users of PBF-LB/M machines to provide guidance for the assessment of the actual health condition of the SPW to: 4.3.1 Flag when a calibration or maintenance of the optical system is needed and alert the user or OEM to perform the calibration or maintenance and 4.3.2 Generate statistical estimates for the useful life, or critical health state, of the SPW based on data recorded over the long term. The statistics may be used to derive maintenance cycles that allow a better utilization of the useful life of the SPW than current predetermined maintenance cycles.