Intelligent Painting Process Planner for Robotic Bridge Painting

Due to increased government regulations on environment, health, and safety, the cost of on-site bridge painting has quadrupled over the past several years. The construction industry faces a great challenge in how to control the increased costs of bridge painting and meet the regulations at the same time. A possible solution to address this challenge is to develop a robotic bridge painting system. The development of the robotic system can be justified by the potential improvements in safety and productivity. This paper presents the development and testing of an Intelligent Painting Process Planner. The Planner, built based on bridge feature scheme, is the key component for the robotic bridge painting system that integrates the painting process planning, robot path planning, cost optimization, and quality control functions. During the development process, lab experiments were conducted to determine the values of painting process planning parameters and coating thickness distribution functions. Field tests demonstrated that the prototype robotic bridge painting system achieved the specified painting quality using the parameter values provided by the Planner. Areas that need to be improved in the future were also identified.     

Thermal Performance Analysis of Highly Reflective Coating on Residences in Hot and Arid Climates

A 1-D transient model (RESHEAT), developed by the writers, was used to study the thermal performance of a highly reflective paint applied sequentially to the outer walls and roof of a simulated residence in a hot and arid region of the southwestern United States. The model uses climatological inputs from a file that includes hourly data on ambient temperatures, insolation, cloud cover, and so on, at the particular location. The model focuses particularly on the potential cooling load reduction due to the reduced heat pickup from the inside attic surfaces to the outer surfaces of the supply duct. This simulation showed that a reduction of 33.6% (cooling load) on the average is achieved over the base case where no reflective paint is used when the outer surface of the roof and walls are painted. Alternatively, only a 11% reduction would be achieved if the reflective paint is applied only to the roof. Savings of $42 per month are conservatively estimated from calculations made when applying this technology to a typical residence (roof and walls) equipped with a 4 ton refrigeration unit in the Southwest.     

注重形式美与提高鉴赏力——中国绘画鉴赏的理论与实践

长期以来,美术鉴赏教育走进了忽视形式美、专注所谓意义与价值的误区。培养"欣赏形式美的眼睛"是美术鉴赏教育的重点与难点。本文对"形式"、"形式美"、"艺术的形式本体"、"绘画艺术本体"概念进行了梳理和界定;紧密结合中国绘画鉴赏的教育实践,提出了提高中国绘画鉴赏力的审美理念、路径、方法。     

铜及其合金的表面钝化-涂装抗蚀性能的电化学测试

表面钝化与涂装工艺相结合可显著提高铜及其合金的防腐性能.采用电化学工作站对涂层腐蚀电流进行定量测量,其结果显示,常规的涂装试样,在3% NaCl盐水溶液中浸泡1天,测得腐蚀电阻(Rc)为3.56×105Ω.钝化处理后再涂装的试样测试结果为无穷大.盐水浸泡5天后,前者95%表面受到不同程度的腐蚀,后者仍然正常.后者浸泡15天的腐蚀电阻为2.31×106Ω,仍高于前者浸泡1天的数据.钝化涂装工艺可用于室外及抗腐蚀性能要求较高的铜及其合金制品的表面防护装饰.     

喷涂机器人喷枪轨迹规划的优化算法研究

在建立了喷枪位姿模型和自由曲面上的涂层厚度数学模型后,提出了喷涂机器人喷枪轨迹规划的优化算法,并利用极大极小法进行求解.计算机仿真结果论证了本算法和数学模型的有效性,为离线编程系统的建立奠定了基础.     

从雅集图“观”女性园林空间的景与境

雅集作为中国古代以男性为主体的文人雅致生活的表现方式,在明清以后,以女性为主体的雅集活动逐渐兴起。私家园林作为女性雅集的空间载体,被文学作品或图像史料予以记录和直观表达,为研究园林中的女性活动空间提供了重要基础。研究采用图像分析法和社会学分析方法,从文人结社与女性雅集的关系入手,以清代《湖楼请业图》为研究对象,对湖楼诗会的时空背景做出阐述,围绕园林空间分布、 景观要素经营和女性活动特点三方面探讨了二维图像所表现的人景关系;同时拓展到对该时期才女群体所创造的独特文化景观的理解。     

焦化设备隔热层下腐蚀与防护

介绍了焦化设备隔热层下腐蚀机理,分析了其影响因素及防护措施,其中金属保护涂层是最基本的方法,并提出了隔热涂料在焦化设备的应用。     

寓画于园，以画探园：《红楼梦》大观园园林空间的画意营造 #

曹雪芹对大观园的空间营造与当时寓画于园的宗旨息息相关,以山水画的空间法则解析大观园园林空间营造意匠,可以拓宽中国传统园林空间的画意内涵。大观园园林空间在动态游观法则下,从整体与局部、空间序列、景观集群三个方面推进了园林空间形态的完善;在气韵生动法则下,从风声、水声、动物声三种声景营造加强了园林空间结构的音韵流通;在象征隐喻法则下,从植物象征与文学象征引发了园林空间氛围的意境呈现。大观园园林空间的画意营造,既继承了传统文化的经典内核,又有园林空间形态、结构与氛围方面的创新和拓展,体现了诗意栖居的和谐境界。     

日本重防蚀涂装工艺概况

概述了日本实用的重防蚀涂装工艺以及为了评价重防蚀涂装体系优劣而进行的自然环境考核试验,列举了日本部分重防蚀涂料标准.侧重介绍了一批日本桥梁、贮存罐、化工、海洋工程等的防蚀措施.     

三维图形技术绘画方法的探讨

介绍使用目测代替光照的方法在三维图上绘制阴影,分析了它的特点、适用对象,并介绍绘图的方法、步骤以及技巧,将之应用于教学可带来良好的辅助效果。