面向绿色造船的修造工艺能耗及排放现状

针对全球环境污染的不断升级,立足于船舶修造行业,解读在绿色造船中需要遵守的法规条例,并且梳理修造工艺各环节的能耗及排放问题。调研国内若干家船舶修造企业,汇总修造工艺各环节的能耗及污染物排放数据:修造工艺的能耗较为复杂,并且未建立生产车间的能耗管理系统;污染物排放违规现象严重,处罚案例较多;通过设备改造及工艺优化,可有效减少排放、保护环境。国内船舶企业需要转化危机为机遇,在实现节能减排的基础上,加速转型升级,提高市场竞争力。

3D打印技术在“舰艇修造工艺”课程教学中的应用与探索

针对舰艇修造工艺课程实践性强、所需教学模型多、空间想象能力要求高的特点,结合教学和实践经验,提出了3D打印技术与舰艇修造工艺课程实践教学相结合的方法,可进一步优化和丰富教学手段和模式,提高学生的学习兴趣和空间思维能力,有助于学生更好地理解教学内容,加强了学生对知识的掌握程度,有效地提高了理论教学和实践教学的教学质量。

浅析安装和修造工艺误差对门式起重机运行的影响

根据铁路货场内门式起重机运行过程中出现的一些故障和问题,剖析门式起重机安装和修造工艺误差对其正常运行的影响,进而提出改进或提高安装和修造工艺质量,消除工艺误差的办法,以确保门式起重机的运行质量和正常的铁路运输生产秩序。

国内船舶企业能耗及污染物排放

通过国内船舶企业的调研数据,建立基于反向传播人工神经网络(Back Propagation Artificial Neutral Network,BP-ANN)的板材日切割量预测模型,实现对船舶修造工艺能耗及污染物排放的评估,并计算得到船舶工业的能耗及污染物排放指数。通过对能耗及污染物排放现状的深入分析,梳理国内船舶企业能耗及污染物排放特征及影响因素,并提出船舶企业节能环保体系的构建要点,为后续船舶修造工艺优化和船舶工业高质量发展提供科学依据。

Influence of Manufacturing Process of Warp-knitted Vascular Prosthesis on the Wall Homogeneity

This paper reports the evolution of textile structure and mechanical properties of vascular prosthesis in the level of the whole prosthesis and the constituent filaments with respect to the manufacturing process. The tubular wall of the prosthesis is divided circumferentially into three zones; basic line (BL), remeshing line ( RL) and guide line ( GL). Some heterogeneity has been observed on the tubular wall in terms of stitch structure of the prosthesis and linear density of the constituent filaments. The breaking position of the prosthesis under circumferential tensile localizes preferentially in remeshing line that is the weakest zone by warp knitting with double needle bed. Furthermore, the statistical differences of the mechanical properties of the filaments of zone RL, GL and BL have been confirmed too. It is predictable that the deterioration of prosthesis, under physiological loads (periodical pulse blood pressure etc.), could happen firstly in the weaker zone in vivo.