基于模糊语义模型的陶瓷感官数据标准化

陶瓷感官评估结果的表达形式包括语言词汇、象征性符号和数值描述等,它们具有不确定性和不精确性.本文通过对不同陶瓷感官评估专家的感官评估数据进行分析,建立了一个陶瓷感官评估数据标准化模型,该模型在信息损失最小的前提下进行感官评估数据的标准化,实验证明该方法是有效的.     

ChatGPT译文质量的评估与提升——以陶瓷类文本汉英翻译为例

以淄博陶瓷琉璃博物馆中英介绍文本为语料，以ChatGPT译文为研究对象，比较该语言处理模型作为机器翻译工具与其他3种机器翻译软件的翻译性能和译文质量。采用BLEU值和TER值自动评估方法对译文质量进行综合评估，结果显示，ChatGPT在陶瓷类文本汉英翻译中表现良好。对比分析人工编写提示语和优化后自动生成的机翻提示语对译文质量的影响，总结可在陶瓷类文本汉英翻译领域中应用的优秀提示语，供译者在翻译实践中参考和使用。研究发现，ChatGPT优化后的自动生成提示语比传统的人工编写提示语更适用于陶瓷类文本英译，译文质量更高，可以为译后编辑提供更好的文本处理基础，有效助力中华优秀传统文化对外传播。     

陶瓷艺术品价值评估研究

近年来我国陶瓷艺术品市场高速发展,市场规模不断扩大,然而陶瓷艺术品价值评估机制的混乱仍然是限制其发展的主要问题。本文总结了国内外的研究现状,探究陶瓷艺术品的价值构成,收集分析目前国内流行的陶瓷艺术品价值评估方法,同时对陶瓷艺术品评估的方法和行业乱象问题给出自己的建议。     

基于证据理论的陶瓷智能感观评估

陶瓷感官评估结果的表达形式包括语言词汇、象征性符号和数值描述等，它们具有不确定性和不精确性。本文首先运用模糊逻辑技术对这些评估结果定量化，并基于证据理论提出了一种陶瓷智能感观数据融化方法，得到了基于感观数据的质量分级，并取得了较好的实验结果。     

石膏粉质量的简易鉴别方法

石膏粉是陶瓷成形生产中常见的制作模型的材料。笔者根据生产实践经验，并结合目前陶瓷企业生产的实际需要，提出了一些快捷、简易判定和鉴别石膏粉质量的方法。     

陶瓷窑内流场与温度场仿真模拟及结构优化

陶瓷窑内温度分布的均匀性对制品的质量具有关键的影响。本文以实际陶瓷窑炉为几何模型,采用数值模拟的方法,对现有陶瓷窑炉结构改造及参数优化后的窑内烟气的流场与温度分布进行了仿真模拟。结果表明,陶瓷窑炉的结构及操作参数对窑内的温度分布有重要影响,在对陶瓷窑炉结构改造及采用合理的操作参数后,窑内能取得均匀的温度分布。     

陶瓷智能感官评估平台的研究

感官评估以其直接、易得和与消费者紧密相关等优点,在食品、化妆品、包装、汽车、茶叶、酒、烟草和纺织行业中不少应用。本文基于智能技术提出了在陶瓷行业建立感官评估平台的方法和过程,此系统采用多元统计的数据处理方法和模糊神经网络技术,以Matlab为工具对感官数据和客观数据进行分析和处理,实现对陶瓷产品质量等级的评估。     

延长石膏模型使用寿命的探讨

一石膏模型是近代陶瓷工业中注浆、机轮(包括可塑法)等成型方法上不可缺少的工具之一,石膏模型的好坏,如规格、成型方法设计的优劣,以及制造质量,直接影响陶瓷产品的质量和成本,关系非常重要。在陶瓷生产     

硫化模型的污染及其防护措施

用受污染的模型硫化橡胶制品，不仅影响制品的外观质量，甚至影响制品的尺寸精度，所以对受污染的模型必须清洗。文章指出了导致硫化模型污染的因素，并对硫化模型污染物进行了分析；介绍了两种硫化模型的清洗方法。文章最后指出，采用脱模与清洗模型双重作用的脱模剂及对模型进行烧结陶瓷处理，均能减少对硫化模型的污染。     

出水陶瓷脱盐处理研究综述

近年来，随着水下考古事业的发展繁荣，古陶瓷等大量文物出水。在这种情况下，出水文物的保护工作重要性凸显，其中对出水陶瓷器文物进行脱盐处理是学术界关注的焦点之一。本文回顾总结了可溶性盐类对出水陶瓷的病害机理、出水陶瓷的脱盐处理方法，以及脱盐终点判定和损伤评估等方面的研究现状，认为出水陶瓷的脱盐速率、不同脱盐方法对陶瓷文物本体的损伤判断等方面还需要进一步研究探索，为出水陶瓷脱盐研究与实践提供了参考线索。     

可加工陶瓷材料机械加工技术的研究进展

随着可加工陶瓷材料的研发与应用,可加工陶瓷材料的机械加工技术逐渐成为当今的研究热点之一.本文综述了可加工陶瓷在机械加工过程中的材料去除特性、刀具磨损、加工工艺及可加工性评价,内容涉及加工表面质量、去除机理、加工损伤、材料去除率、刀具参数、切削参数、表面粗糙度、冷却和可加工性综合评价,并提出了今后的研究发展方向和趋势.     

工程陶瓷材料的磨削加工性评价方法研究

提出了一种工程陶瓷材料磨削加工性综合评价的新方法.应用图论中的有向图理论,以材料磨削加工性属性为顶点,以各属性之间的相互关系为边,建立了陶瓷材料磨削加工性评价的有向图模型.根据有向图模型,建立磨削加工属性矩阵,并由矩阵的积和式函数计算出材料的磨削加工性指标,从而判断材料的磨削加工性.有向图模型可以综合考虑多种属性及属性间的相互关系,可对陶瓷材料的磨削加工性做出正确、完整的评价.论文选择陶瓷材料的硬度、断裂韧性和弹性模量3个力学性能参数作为磨削加工属性,根据所提出的评价方法,对4种典型工程陶瓷材料的磨削加工性进行评价,并根据磨削加工性指标进行排序,在材料机械加工之前确定其磨削加工性.通过磨削实验验证评价结果.评价结果将对陶瓷材料加工中工具和工艺参数的确定具有指导作用.     

Laser drilling of structural ceramics—A review

Structural ceramics are becoming widely popular in numerous fields because of high mechanical and physical properties. It is of great difficulty for conventional techniques to machine brittle and hard materials. As one of nontraditional machining methods, laser beam machining has emerged as an effective technique for drilling of ceramics. This paper reviews the research work on laser drilling of structural ceramics from its different pulse width. Lasers have been discussed to understand effects of critical experimental parameters on the quality characteristics and physical mechanisms involved in drilling ceramics. In addition, it is held that heat and liquid-assisted laser processing serves as a useful method to improve processing quality. Computational approaches of ANSYS and COMSOL are used to predict laser input parameters’ effects on quality of hole and describe the physical phenomena during processing. Comments on laser drilling of ceramics developments and future directions are provided at the end.     

Ba(Zn1/3Ta2/3)O3 Ceramics with Low Dielectric Loss at Microwave Frequencies

The dielectric properties at microwave frequencies of Ba(Zn_1/3Ta_2/3)O₃ ceramics prepared by sintering were investigated. These ceramics had lower density but higher loss quality than ceramics hot-pressed at 1400°C. Loss quality was greatly improved by prolonged sintering. The Q of the ceramics measured by the dielectric resonator method was 14 000 at 12 GHz. The ceramics were investigated by X-ray diffraction analysis. It was found that Q improvement corresponds with increased Zn and Ta ordered structures in the ceramics.     

La_2O_3掺杂(Bi_(0.5)Na_(0.5))_(0.94)Ba_(0.06)TiO_3陶瓷的介电和压电性能的研究

用固相反应法制备La2O3掺杂的铁电陶瓷(Bi0.5Na0.5)0.94Ba0.06TiO3(BNBT6)。X射线衍射曲线表明掺杂0-0.6wt%La2O3的BNBT6为钙钛结构。研究了La2O3掺杂对BNBT6陶瓷介电性能和压电性能的影响。结果表明La2O3掺杂量为0.3wt%的BNBT6陶瓷综合性能最佳,其中介电常数为1981.4,介电损耗为0.0625和压电常数为145pc/N。SEM图象表明La2O3掺杂提高了陶瓷的致密度。     

First printing of continuous fibers into ceramics

This article reports a novel method for three-dimensional (3D) printing of continuous fibers into ceramics to improve the mechanical properties of printed ceramics, which is difficult in other 3D printing technologies. The ceramics were derived by pyrolysis of thermoplastic ceramic precursor feedstocks, which were prepared by two methods. One is homogeneously mixing thermoplastic resins and ceramic precursors. The feedstocks prepared by this method exhibit good thermoplastic properties and can be extruded into filaments. Ceramics were obtained by heating the feedstocks to 1100°C in argon atmosphere. The ceramics were amorphous and remained stable during 1100-1300°C; at 1400°C they decomposed into β–SiC with simultaneous volatile gas generation. Above 1400°C, their quality decreased significantly due to cracking of ceramic skeletons. The other method is directly heating, extruding and printing the ceramic precursor. The precursors showed good printability and complex ceramic structures were printed with continuous carbon fibers inside. The continuous carbon fibers improved the flexural strength of pyrolytic ceramics, which is about 7.6 times better than that of the ceramics without fibers. The novel method unravels the potential of 3D printing of continuous fibers into ceramics with complex lightweight structures to improve the strength.     

陶瓷的高温疲劳失效破坏准则

对陶瓷高温疲劳破坏特性进行了研究,并提出高温疲劳评价方法和破坏准则。第一准则是评价疲劳强度-寿命的疲劳破坏准则;第二准则是评价热应变一时间的热应变损伤准则;第三准则是评价变形-应力-时间的高温疲劳变形准则。文中还提出了评价强度-寿命的逐级加载法,该法节省试验时间、使用方便。     

Fracture resistance estimation of elastic ceramics in edge flaking: EF baseline

The fracture resistance of single-phase oxide and nonoxide ceramics was studied in flaking the specimen edge with a Rockwell indenter (EF test method) and in bar flexure (SEVNB method). The fracture resistance F_R and fracture toughness K_Ic are shown to be proportional, the plot with the F_R–K_Ic coordinates is termed the EF base diagram, in which the EF baseline is constructed. It was revealed that the fracture resistance of ceramics was not influenced by chip scar shapes on the specimen edge. The data points for inelastic ceramics with a lower EF barrier to the onset of fracture lay below the EF baseline in the base diagram, while the data points for glasses and ceramics with a higher barrier were located above it.The EF test method is appropriate for comparative evaluation of fracture resistance of ceramics and verification of estimates obtained by other methods.     

Evaluation of Silicon-Nitride Ceramic Valves

Silicon-nitride ceramic valves can improve the performance of both light- and heavy-duty automotive engines because of the superior material properties of silicon nitrides over current metal alloys. However, ceramics are brittle materials that may introduce uncertainties in the reliability and durability of ceramic valves. As a result, the lifetime of ceramic valves are difficult to predict theoretically due to wide variations in the type and distribution of microstructural flaws in the material. Nondestructive evaluation (NDE) methods are therefore required to assess the quality and reliability of these valves. Because ceramic materials are optically translucent and the strength-limiting flaws are normally located near the valve surface, a laser-scatter method can be used for NDE evaluation of ceramic valves. This paper reviews the progress in the development of this NDE method and its application to inspect silicon-nitride ceramic valves at various stages of manufacturing and bench and engine tests.     

新视角下建陶产业能耗排放水平初探

针对传统能耗排放计量方式的不足,从完整产业链的视角分析了建陶行业产业链的特点,试图从全新的角度来看待和分析建陶产业的“能耗-排放”水平,对建陶产业的能耗排放水平作一个更加客观科学的评价。