散化船检验注意事项

2002年9月，受广东省船舶检验局的委托，我分局对一艘600吨散装化学品船进行了检验和发证。对于此类“四客一危“船舶，一直是交通部的检查，检验的重点，属于技术要求高，设备要求齐全的船型。     

The effect of plastic constraint on the initiation of ductile tears in shipbuilding structural steels

In this paper, the effect of plastic constraint on the initiation of ductile tears in four different shipbuilding structural steels has been experimentally studied by measuring the J-integral and crack opening displacement COD at initiation in three-point bend specimens with deep and shallow notches. Experimental results of seven groups of different strength alloy steels show that both Si and Ji values of ductile tear from the shallow crack specimens which have less constraint flow field are significantly higher than those of deeply notched specimens. Slip-line-field analysis shows that, for shallow crack, the hydrostatic stress is lower than that from standard deeply cracked bend specimen, which develops a high level of crack tip constraint, provides a lower bound estimate of toughness, and will ensure an unduly conservative approach when applied to structural defects, especially if initiation values of COD and J-integral are used.     

汽车用材及工艺的革新

汽车材料是汽车工业发展的重要基础之一,材料和汽车的制造成本密切相关,也对汽车整体性能的提高有重要的影响,汽车材料技术的革新是推动汽车工业发展和技术进步的重要因素.     

低温压力容器的制造特点

本文简述了低温压力容器的特点和性质及针对低温压力容器破坏原因所采取的主要工艺措施。     

现浇混凝土连续梁早期裂缝成因及防治

通过介绍现浇混凝土连续梁早期裂缝产生的部位及规律，分析了产生的一些基本原因，初步探讨设计施工中应采取的一些措施来预防梁体早期裂缝的产生。     

海上浮游别墅--飞碟式海上之家

有专家说,生命最初起源于海洋,因此才有了人类对海洋的敬畏与崇拜。如果我们能够自由地选择度假的方式,恐怕再也没有什么比到海洋深处自由地寻找生命最初的痕迹更让人兴奋的了。你可能会说,穿上先进的潜水服,即使是“旱鸭子”也能够到海洋中与海豚一齐嬉戏。如果你胆子够大,甚至可以钻到铁笼子里逗鲨鱼玩;而乘坐先进的观光潜艇,你可以轻松地观赏海洋中的风光。