Aeronautical Manufacturing Technology

关闭×

Home | About Journal | Editorial Board | Instruction | Publication Ethics Statement | Subscriptions | Contacts Us | Chinese

Office Online

Submission Online

Editor-in-chief

Journal Online

Advanced Search

Download Articles

Quick Search

2016 Vol. 59, No. 23/24 Published: 2016-12-15

FEATURE FIGURE FORUM NEW VIEWPOINT RESEARCH C0NTENTS COVER STORY

C0NTENTS

	6	C0NTENTS


		2016 Vol. 59 (23/24): 6-10 [Abstract] ( 137 ) HTML^New PDF (3090 KB) ( 538 )

COVER STORY

	16	State-of-the-Arts in 3D Free Bending Technology and the Future Application in Aviation Manufacture
		GUO Xunzhong1, MA Yannan1, XU Yong2, ZHOU Shujun3, ZHANG Shihong2, TAO Jie1
		DOI: 10.16080/j.issn1671-833x.2016.23/24.016
		Three dimensional free form bending technology was recognized as an important technical innovation in the field of plastic forming. 3D free bending system of complex components can realize high precision and non-die forming of pipe, section bar and wire rod under different bending radii, which has formed a huge challenge to the traditional bending technology of metal components. This article systematically introduces the basic principle of free form bending technology, the technical advantages of three-axis, five-axis and six-axis free bending system, key process parameters and forming defects, research progresses of related technology and equipment and the application prospect of this technology in the manufacture field of hollow complex bending component is given.
		2016 Vol. 59 (23/24): 16-24 [Abstract] ( 239 ) HTML^New PDF (4019 KB) ( 907 )

FIGURE

	26	The Unity of Knowing and Doing, The Unity of Persistence and Hard Work


		2016 Vol. 59 (23/24): 26-28 [Abstract] ( 172 ) HTML^New PDF (1066 KB) ( 328 )

FEATURE

	30	Prediction of Chatter Stability for Milling Process Using Semi-Analytical Approach Based on Three-Order Runge-Kutta Method
		LI Zhongqun, PENG Yuerong, XIA Lei, ZHU Fan
		DOI: 10.16080/j.issn1671-833x.2016.23/24.030
		In order to solve the dynamic model of milling process set up using regenerative chatter theory, a new semi-analytical approach based on three-order Runge-Kutta method was proposed in the paper. Firstly, the dynamic differential equation was represented by the form of the state space equation. Secondly, the state transition matrix was deduced using the three-order Runge-Kutta method. Lastly, the stability under current cutting condition was determined according to the Floquet theory, and as a result, the stability lobe diagram (SLD) of milling process can be obtained. It was shown that the proposed semi-analytical approach based on three-order Runge-Kutta method has higher convergence rate and computation accuracy, when compared with the simulation results of the classical semi-discretization method.
		2016 Vol. 59 (23/24): 30-33 [Abstract] ( 131 ) HTML^New PDF (1281 KB) ( 460 )

FORUM

	36	High Temperature Stress-Rupture Properties of TiAl Base Alloy Directionally Solidified by Cold Crucible Method
		DING Hongsheng1, LI Jintao1, WANG Qiang1, GENG Hongbin2, CHEN Ruirun1,GUO Jingjie1, FU Hengzhi1
		DOI: 10.16080/j.issn1671-833x.2016.23/24.036
		In this paper, TiAl based alloy with composition of Ti-47Al-2Cr-2Nb has been successfully prepared by electromagnetic cold crucible directional solidification. The microstructure of the directionally solidified alloy consisted of alternatively arranged lamellae which were composed of α2+γ laths. The inter-lamellar spacing was influenced by withdrawal rate and thinner inter-lamellar spacing was achieved at higher withdrawal rate. The included angels between columnar crystal orientation and the growth direction increase with the increasing withdrawal rate. The high temperature tensile properties were tested from 600℃ to 800℃ and the fracture strength of the alloy decreased with the increasing test temperature. Inter-lamellar spacing was a significant influence factor on the high temperature tensile strength and the alloy prepared at withdrawal rate of 1.2mm/min showed the highest strength (470MPa) at 800℃ . The α2/γ interfaces in the fully lamellar structure could act as obstacles to shearing. Higher density of interfaces existed in the matrix of the alloy with higher withdrawal rates and greater applied stress was essential for further deformation in case of thinner inter-lamellar spacing. A function of tensile strength and test temperature was created according to the values of alloy prepared at withdrawal rate of 1.0 mm/min from 600℃ to 800℃ . The effect of withdrawal rate on the stress rupture-properties was investigated at 200MPa/650℃ . The results showed that finer inter-lamellar spacing could enhance the high temperature stress ruptureproperties. Under the same test conditions, the alloy prepared at withdrawal rate of 1.2mm/min held the highest creeprupture life (48h). The improvement effect of thinner lamellar structure on creep-rupture life decreased with the increasing test temperature and applied stress. The fracture morphology of the stress-rupture samples indicated the Ti-47Al-2Cr-2Nb behaved in brittle cleavage fracture companied with a small amount of ductile fracture. The predication model of the stressrupture was set up through Larson-Miller and Manson-Haferd parametric method. The predication function is an accurate model confirmed by little difference existing between theoretical and experimental values.
		2016 Vol. 59 (23/24): 36-41 [Abstract] ( 178 ) HTML^New PDF (2882 KB) ( 408 )

	42	Study on Nacre-Like Structure Clay Nanocomposite Enhanced by Nano Cellulose
		ZHAO Yanwen1, LI Yunfei2, CHEN Jing1, YE Hongjun1, JIANG Wei1, GU Yizhuo3
		DOI: 10.16080/j.issn1671-833x.2016.23/24.042
		Mechanical enhanced nacre-like clay nanocomposite was fabricated by the incorporation of nano cellulose (CMF) into polymer (PVA, starch and casein)/clay system via solvent evaporation. SEM was used to analyze the cross section of corresponding nanocomposites, and XRD was employed to study the interspace of clay nanosheet. Tensile test was used to analysis the influence of CMF content on mechanical behavior. The results indicate that after the incorporation of polymer, the interspace of nanosheet was increased while change seldom occurs after the introduction of nano cellulose. Because of the bridging effect induced by nano cellulose, the as-prepared nanocomposites show largely enhanced mechanical property, and the extent of enhancement is depend on the polymer type and concentration.
		2016 Vol. 59 (23/24): 42-47 [Abstract] ( 223 ) HTML^New PDF (2485 KB) ( 554 )

FORUM

	52	Research on Surface Integrity for GH4169 of CNC Polishing After Grinding
		GAO Shimin, QUAN Fang, CHEN Zhitong
		DOI: 10.16080/j.issn1671-833x.2016.23/24.052
		For the blade material GH4169, the process of CNC polishing after CBN wheel grinding was conducted. Firstly, the influence of the pre-compression parameter on life of wool wheel and the roughness were studied. The influences of polishing depth on the surface topographic characters of surface integrity including surface roughness, surface micro-hardness, and surface residual stress, were studied to optimize the polishing depth. With the increasing of the polishing depth, the roughness Ra drops firstly and then gets stable, and the surface micro-hardness decreases. The normal residual stress in the feed direction shows a trend from rise to decline, while in the vertical feed direction, it stays unchanged basically and then decreases. The polishing depth after optimized is 2μm, and pre-compression parameter is about from 0.5mm to 1.0mm. It has a small roughness of 0.3μm, a macro-hardness of HV389.36 and the high compressive stresses after CBN grinding, which are -871.6MPa and -1084.0MPa for two principal stress directions.
		2016 Vol. 59 (23/24): 52-56 [Abstract] ( 185 ) HTML^New PDF (1824 KB) ( 330 )

FEATURE

	58	Standard for Human-Robot Collaboration and its Application Trend
		ZOU Fang1,2
		DOI: 10.16080/j.issn1671-833x.2016.23/24.058
		This paper based on the definition and connotation of human-robot collaboration. Several key technologies that human-robot collaboration need to overcome have been put forward, and four famous collaborative robots have been introduced. This paper introduces the latest research results of foreign cooperative robot in aircraft assembly, and humanrobot collaboration will become the new normal of assembly system.
		2016 Vol. 59 (23/24): 58-63 [Abstract] ( 192 ) HTML^New PDF (2709 KB) ( 1715 )

	64	Research on Forming Process Planning System for Composites Component Based on 3D Model
		MENG Yuemei1,2, FENG Miaoting1,2, GU Xin’an1,2
		DOI: 10.16080/j.issn1671-833x.2016.23/24.064
		The development of digital design and manufacturing for composites component is analyzed. The research status of process planning system based on 3D model is described. According to characteristics of forming process planning for composites component, construction technology of process planning system for composites component based on 3D model is discussed. The functions and the implement methods of the system are introduced. The forming process planning system for composites component based on 3D model is developed, and the functions of the system are verified by planning composites components process.
		2016 Vol. 59 (23/24): 64-70 [Abstract] ( 154 ) HTML^New PDF (2214 KB) ( 518 )

	71	OpenGL Application in Additive Manufacturing Data Processing System
		FENG Miaoting1,2, MENG Yuemei1,2, SI Shouyu1,2
		DOI: 10.16080/j.issn1671-833x.2016.13/24.071
		By describing the additive manufacturing technology and analyzing the principle of OpenGL, the implementation of graphic display, graphic operation and geometric interworking by OpenGL in additive manufacturing data processing system have been discussed. And it also has been verified and applied in the electron beam freeform fabrication data processing system. By using OpenGL, the accuracy, practicality and interactivity of the system has been improved.
		2016 Vol. 59 (23/24): 71-76 [Abstract] ( 134 ) HTML^New PDF (1575 KB) ( 465 )

NEW VIEWPOINT

	78	Quality Estimation of Product Manufactured by the Autoclave/VARI Process
		WANG Zhaozhao1,2, PAN Lijian2,3, ZHUANG Hengfei2, DUAN Zhenjin1,2, LIU Yuting2, HU Xiufeng2
		DOI: 10.16080/j.issn1671-833x.2016.23/24.078
		Advantages and disadvantages based on comprehensive analysis of the autoclave and vacuum assisted resin infusion (VARI) have been discussed and synthesized. The new process combined autoclave with VARI has been developed. The quality of product produced by the new process has been evaluated and compared with VARI, including fiber volume fraction and thickness. The results show that the product manufactured by the new process present more excellent mechanical properties and less porosity or resin enrichment. In addition, fiber volume fraction of the product by new process can up to 60%. The longer holding time is, the higher the fiber volume fraction will be, until it reaches a certain value.
		2016 Vol. 59 (23/24): 78-81 [Abstract] ( 175 ) HTML^New PDF (1208 KB) ( 493 )

RESEARCH

	82	Quickly Adding Technology for Aircraft Automated Assembly Hole Processing Features Based on MBD
		CHEN Yali1，TIAN Wei1，LIAO Wenhe1,WAN Shiming2
		DOI: 10.16080/j.issn1671-833x.2016.23/24.082
		Assembly hole processing features are basic and important for the off-line programming system of aircraft automated assembly. In order to solve the problem of information source of assembly hole processing features, the characteristics of feature technology and the model-based definition (MBD) technology in digital assembly are illustrated. Then, a quickly adding technology for the assembly hole processing features is proposed, in which MBD technology and feature technology is integrated. After that, the modeling characteristics of the aircraft skin product are represented. With the MBD model as basic unit, an information model of the product processing features is constructed by processing features in which geometry and process information of the model is combined. To realize the quickly adding technology on product analog, the function module of information adding on DELMIA V5 has been developed for CAD digital models. Finally, the information model of the product processing features is established. The model provides good data source for aircraft automated assembly off-line programming system and realizes the CAD/CAM/CAPP system integration and data sharing.
		2016 Vol. 59 (23/24): 82-86 [Abstract] ( 182 ) HTML^New PDF (1589 KB) ( 513 )

	87	Resin Pressure Test of Composite Ⅰ Shape Structure in Autoclave Zero-Bleeding Process and Pressure Uniformity Analysis of Pressure Transfer With Rigid Mold
		SUN Kai, LIU Weiping, HUANG Zhijun, SUN Cheng, CHEN Ping, LI Zhiyuan
		DOI: 10.16080/j.issn1671-833x.2016.23/24.087
		For Ⅰ shape parts made by 977-2/IMS prepreg using H type molding in autoclave zero-bleeding process, resin pressure has been tested by using online standard curing cycle and step pressurization cycle respectively. The equivalence of resin pressure and autoclave pressure is investigated and the uniformity of pressure transfer with rigid mold is analyzed according to the resin pressure test results. The results indicate that the resin pressure is consistent with autoclave pressure in one side rigid mold area after stabilization. The equivalence of resin pressure and layer pressure in autoclave zero- bleeding process is verified. The resin pressure has a load balance procedure in two-side rigid mold. The resin pressure is even in different area and is consistent with the autoclave pressure. Compared with step pressurization cycle, the resin pressure has some fluctuations of the standard curing cycle in the initial stage of the test. However, the resin pressures under the two process cycles are the same after stabilization. It provides a reference for the resin pressure test of parts whose thermal distribution is relevant large different.
		2016 Vol. 59 (23/24): 87-91 [Abstract] ( 118 ) HTML^New PDF (1678 KB) ( 797 )

	92	Feature Analysis of the Different Materials for Large Bridge Type Machine Tool Column
		CUI Lijie, GUAN Dali, LI Zhongkai, LI Chuye
		DOI: 10.16080/j.issn1671-833x.2016.23/24.092
		Using numerical calculation method, and compares the static load compressive capacity and impact of the transient response for the three different materials, cast iron and steel concrete columns. Analysis data shows that the steel column has the best bearing capacity and minimum deformation under the same static pressure. Because of damping, the amplitude of concrete column is clearly limited, under the action of impact vibration attenuation faster, more attention in the vibration isolation performance of high-speed high-performance processing field, using the concrete column is a better choice.
		2016 Vol. 59 (23/24): 92-94 [Abstract] ( 127 ) HTML^New PDF (1717 KB) ( 301 )

	95	Influences of the Area Changes of the Trailing Edge Structure of the Guide on the Turbine Performance
		MA Xiaofeng1, FENG Kaikai2, SONG Wenyan2
		DOI: 10.16080/j.issn1671-833x.2016.23/24.095
		The fine structure of the trailing edge of the turbine guide leads to a change in the flow area of the flow path due to machining errors, which in turn can cause a change in turbine performance. Numerical simulation method is used for the trailing edge of slot cooling structure in a low-pressure turbine guide to study the flow field and performance caused by the front and rear of the trailing edge (the area of flow passage in suction trailing edge is T1 and the area of flow passage in pressure trailing edge is T2 ) area changes. The results show that in the design state, the throat of turbine is T2. When T2 is bigger than that in the design state, the rate of work and mass flow of the turbine will become bigger, and the turbine efficiency and turbine power will become smaller, but it has a nice T2 to let the rate of power comes to maximum value. When T1 is bigger than that in the design state, the turbine efficiency and turbine power will increase.
		2016 Vol. 59 (23/24): 95-99 [Abstract] ( 128 ) HTML^New PDF (2936 KB) ( 532 )

	100	Cutting Parameters Optimization of Titanium Alloy Milling Process Based on Support Vector Machine and Particle Swarm Algorithm
		XIANG Guoqi1， YIN Guofu2
		DOI: 10.16080/j.issn1671-833x.2016.23/24.100
		Titanium alloys are widely used in aviation fields, the processing quality of this materials will be affected by the milling force. In order to guarantee the machining quality, improve production efficiency and reduce cost, the cutting parameters of the titanium alloy are reasonable selected, which play an important role. In this paper, the titanium alloy Ti6Al4V milling process is analyzed by finite element method, a milling force prediction model is established based on support vector machine (SVM). The design methodology based on SVM and particle swarm optimization (PSO) is proposed for titanium alloy milling process cutting parameters. The results show that this methodology is feasible and highly effective, and thus can be used in the machining process parameters optimum and other material processing fields.
		2016 Vol. 59 (23/24): 100-103 [Abstract] ( 129 ) HTML^New PDF (1612 KB) ( 319 )

	104	Narrow-gap\|TC4 titanium alloy\|Laser welding\|Microstructure\|Microhardness
		WANG Xiangyu, GONG Shuili, YANG Jing, LU Wei, SHAN Feihu
		DOI: 10.16080/j.issn1671-833x.2016.23/24.104
		The IPG YLS-5000 multi-mode fiber laser is used for the 12mm thick TC4 plate by the multiple-pass narrow-gap approach. Optimized process parameters are attained, as well as the microstructure in laser beam welds of TC4 titanium alloy is investigated. The result shows that incomplete fusion and porosity could be reduced using the optimized welding parameters. The microstructure of the base metal (BM) is typical equiaxed structure. The microstructure of fusion zone (FZ) is composed of β columnar crystal and basket weave martensite α′ phase. The grain size of heat affected zone (HAZ) is obviously refined. The HAZ partially transformed is made up of martensite α′ phase, transformed α and transformed β. Moreover, the microhardness of weld metal and heat affected zone is higher than that of base metal, and the hardness reaches to peak value in the heat affect zone near weld metal.
		2016 Vol. 59 (23/24): 104-107 [Abstract] ( 208 ) HTML^New PDF (2674 KB) ( 448 )

	108	Review on the Development of Non-Traditional Machining Methods for the Processing of Micro#br# Holes
		GAO Fei1,2, GU Lin2
		DOI: 10.16080/j.issn1671-833x.2016.23/24.108
		Due to more and more micro holes are used in the aerospace parts, this paper explores the evolution of non-traditional machining method (NTM) for the processing of micro holes. Key features of each machining methods are summarized and the development trends of these methods are prospected.
		2016 Vol. 59 (23/24): 108-111 [Abstract] ( 153 ) HTML^New PDF (2051 KB) ( 666 )

	112	Effect of Stiffeners on the Buckling Performance of Composite Rear Pressure Bulkhead for Civil Aircraft
		LI Zhongyang, LI Dong, GUO Xiang
		DOI: 10.16080/j.issn1671-833x.2016.23/24.112
		In this paper, the research on structure buckling performance due to stiffeners on the composite domed rear pressure bulkhead of civil aircraft is carried out. The dome skin adopts the CFRP laminate and the stiffeners are hat shape stiffeners with PMI foam core. According to establish two categories of structure with and without stiffeners, the static and buckling analyses by using of finite element analysis are carried out. The results show that the stiffeners on the composite domed rear pressure bulkhead have a positive influence on improving the buckling performance and stability of the structure, but the stiffeners contribute less on the improvement of static strength of rear pressure bulkhead. The strain and deflection of the rear pressure bulkhead are improved slightly. So it makes no sense to increase the stiffeners on the domed rear pressure bulkhead from the perspective of cost saving and manufacturing.
		2016 Vol. 59 (23/24): 112-115 [Abstract] ( 105 ) HTML^New PDF (972 KB) ( 415 )

	116	Choice and Application on Datum of Aircraft Components
		WANG Wei, KUANG Cui
		DOI: 10.16080/j.issn1671-833x.2016.23/24.116
		The assembly coordination accuracy of aircraft manufacturing becomes more and more strict with the development of the aircraft structure and process. So defining fairly aircraft components dimension to achieve process optimum through tolerance analysis is an inevitable trend. This thesis introduces and researches the basic theory, with applying selection of certain aircraft components datum. Defining datum is decided by function request, indicating transfer deviation by datum and datum consistency principia of aircraft components. The datum selection method can be applied to dimension design. Assembly quality is improved by defining fairly aircraft components datum, with reducing production cost and increasing productivity in some case.
		2016 Vol. 59 (23/24): 116-119 [Abstract] ( 274 ) HTML^New PDF (1358 KB) ( 692 )

	120	Research of Advanced Materials and Technologies on Airborne Missile
		ZHAO Rong1, LIAO Jinhua2
		DOI: 10.16080/j.issn1671-833x.2016.23/24.120
		The applications of advanced materials and technologies on airborne missile are the basis and precondition of excellent airborne missile. In this paper, the domestic and international development and characteristics of advanced materials including composite materials, high temperature titanium alloy, Al-Li alloy, intermetallic compound and technologies including near net shape, ultra-precision machining technology are discussed.
		2016 Vol. 59 (23/24): 120-125 [Abstract] ( 171 ) HTML^New PDF (870 KB) ( 1498 )

	126	A Temperature Measuring Method Under Acceleration Environment
		LU Liang, WANG Yong, HU Yupeng, ZHOU Tong
		DOI: 10.16080/j.issn1671-833x.2016.23/24.126
		Temperature-acceleration composite environmental test is an important way to test the quality of weapons and aircrafts in shoot and reentry periods of a flight. This paper introduces the way to design a temperature-acceleration composite environmental test system. Fault analysis is presented, and the problem aiming at the temperature drift phenomenon of high g acceleration environment is solved. Practical temperature test result proves that the method is effective and practical and it can provide a reference to a reliable design in composite environmental test system.
		2016 Vol. 59 (23/24): 126-128 [Abstract] ( 128 ) HTML^New PDF (1180 KB) ( 350 )

	129	Effect of Different Smelting Process on the Non-Metallic Inclusions of 1Cr18Ni10Ti
		GUO Cheng，DU Xiangyuan，LI Hongjun，KONG Fanya
		DOI: 10.16080/j.issn1671-833x.2016.23/24.129
		Finding the species, size and number of non-metallic inclusions according to four smelting processes: vacuum induction + electroslag remelting, vacuum induction (ceramic filter), vacuum induction (ceramic filter) + electroslag remelting, vacuum induction + vacuum consumable. According to the results, vacuum induction (ceramic filter) can reach considerable non-metallic content with vacuum induction + vacuum consumable, then get the least quantity of type-D oxide and minimum proportion of large-size type-D oxide.
		2016 Vol. 59 (23/24): 129-132 [Abstract] ( 125 ) HTML^New PDF (1494 KB) ( 518 )

	133	Research Progress of Ultra-Light Fiber Metal Laminates
		WU Guoqing, PAN Yingcai, ZHANG Zongke, HUANG Zheng
		DOI: 10.16080/j.issn1671-833x.2016.23/24.133
		Fiber metal laminates (FMLs) is widely used as fuselage skin materials for aeronautical and space aerocraft due to their low density, high impact resistance, superior fatigue behavior and high damage tolerance. In this paper, development profiles of fiber metal laminates, and research progress of the ultra-light fiber metal laminates are mainly reviewed. Additionally, some urgent research topics of the fiber metal laminates are pointed out.
		2016 Vol. 59 (23/24): 133-136 [Abstract] ( 199 ) HTML^New PDF (1151 KB) ( 1232 )

	137	Design and Manufacture High Parallel R & D Model Based on the Product Maturity
		HUI Wei1, JIN Zhezhu2, HU Baohua3, TAO Jian1, SHEN Bo1, ZHAO Yiji1
		DOI: 10.16080/j.issn1671-833x.2016.23/24.137
		As an important part of a parallel project, the design and manufacturing collaboration has thought about product manufacturability at the design stage, to reduce setup time and shorten the development cycle and time to market. But how to achieve effective collaborative design and manufacturing has been a trouble in aviation manufacturing industry. Using the original VPM-Windchill-DELMIA collaborative research and development mode, based on VPM and DELMIA to further explore to conduct highly parallel direct R & D model applied research engineering design manufacturing, can provide new technical approach to achieve collaborative development of complex product design manufacturing. Using VPM-DELMIA mode, the maximum extent possible to enhance parallel of the design and manufacturing, so that the manufacturing department can timely understand the design state, early conduct process planning.
		2016 Vol. 59 (23/24): 137-141 [Abstract] ( 150 ) HTML^New PDF (1558 KB) ( 410 )

Notices

Download

	Copyright Transfer Agreement

Links

	AVIC Manufacturing Technology Institute

	AVIC

Copyright © Editorial Board of Aeronautical Manufacturing Technology
Supported by: Beijing Magtech