This matter refers to a manuscript submitted by B. K. Parida, Scientist, NAL for publication to ASTM based on the presentation he made at the November 1997 San Diego (USA) conference on Fatigue Crack Closure. There have been claims and counter-claims by Parida and R. Sunder (a former scientist of NAL who left NAL in September 1994) on two fractographic pictures in the manuscript - their origin, their ownership, material used and the load cycle employed. Based on a request from R. A. Mashelkar, Director-General (DG)-CSIR, an initial investigation was conducted by P. Ramachandra Rao, Director, National Metallurgical Laboratory, Jamshedpur. Tests conducted under his supervision on 1.8 mm thick BSL-72 material samples (claimed to have been used by Parida, but material obtained from HAL which happened to be clad as against the original NAL stock which was unclad) showed that one of the figures had been wrongly interpreted by Parida, while the other result could not be reproduced. Ramachandra Rao also mentioned that: 'This dispute can be considered to have two facets, viz. (i) the reproducibility of the micrographs reported by Parida on BSL-72 and (ii) the claim of Sunder that Fig. 10(a) and 10(b) refer to BSL-73 tested earlier and not to BSL-72 tested by Parida et al. In the investigation so far, only the first of these was considered.' Ramachandra Rao specifically recommended, therefore, the setting up a four-member expert committee for complete verification of claims and counter-claims of both Parida and Sunder, including investigation of the second aspect.
展开▼
机译：此事指的是NAL科学家B. K. Parida提交给ASTM的手稿，该手稿是他在1997年11月于美国圣地亚哥举行的疲劳裂纹闭合会议上所作的介绍。 Parida和R.Sunder（前NAL科学家，于1994年9月离开NAL）曾对手稿中的两张断层图像进行过索赔和反索赔，这两张照片是它们的起源，所有权，使用的材料以及所用的载荷周期。根据总干事（CSI）总干事R. A. Mashelkar的要求，贾谢谢德布尔国家冶金实验室主任P. Ramachandra Rao进行了初步调查。在他的监督下，对1.8毫米厚的BSL-72材料样本（据称已被Parida使用，但从HAL获得的材料恰好与未加盖的原始NAL胶合在一起）进行了测试，结果显示其中一张被Parida误解，而其他结果无法复制。拉马尚德拉·饶还提到：“这一争端可以被认为具有两个方面。 （i）Parida报告的BSL-72显微照片的可再现性，以及（ii）Sunder的主张，图10（a）和10（b）指的是先前测试过的BSL-73，而不是通过BSL-72测试过的BSL-72 Parida等。到目前为止，在调查中，仅考虑了其中的第一个。”因此，Ramachandra Rao特别建议成立一个由四人组成的专家委员会，以完全核实Parida和Sunder的主张和反主张，包括对第二方面的调查。
展开▼
