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Wavelet Neural Network - based Research on Online Wearing Prediction of TI6AL4V Cutter in High Speed Milling Hongyu Zhu1,2, Weijin Chen3 and Ying Li1 1 College of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing, China, 210094 2 Nanjing College of Chemical Technology, Nanjing, China, 210048 3 Csr Qishuyanlocomtive & rolling stock research institute co.ltd, 213011 Keywords: Wavelet packets, Neural network, High speed milling, Ti6Al4V, Cutter wearing online prediction Abstract.
To improve the machining efficiency, reduce machining cost and improve products quality, the cutting tool wear is the key factor affecting machining quality, machining efficiency and production safety.
As the cutting tool wear is the key factor affecting machining quality, machining efficiency and production safety.
Among them, the cutting force signal is direct and real, it could not be affected by cut chips and coolant and also has big extent and good capability of anti-interference.
It combines the property of good-conversion, time-frequency localization of wavelet and study capability of neural network, and it is suitable to solve those problems on function approximation, system identification and model recognition.

Intergranular Corrosion of Austenitic Stainless Steel Shuxia Lin1, a, Wenke Bao1, b and Jun Gao1, c, Jiabin Wang2, d 1School of Mechanical Electrical and Information Engineering, Shandong University at Weihai, Weihai 264209, PR China 2 Shandong Shuanglun Group, Weihai 264203, PR China a linshuxia@sdu.edu.cn, bbwk2011@163.com, c shdgj@sdu.edu.cn, bbwk2014@126.com Keywords: Austenitic stainless steel, Intergranular corrosion, Influencing factors, Prevention measures, Sensitivity evaluation Abstract.
The principles and the influencing factors of intergranular corrosion are analyzed in detail.
Factors influencing intergranular corrosion Chemical composition.
[3] R Abdel-Karim , I Elmahallawi and K El-Menshawy: Microstructure and corrosion properties of nitrogen stainless steel 316L produced by hipping [J].
Mechanical & Electrical Engeneering Technology, 2004 33(1) (In Chinese)

Panneer2b 1School of Mechanical Engineering, SASTRA University, Thanjavur-613401.
India. 2 School of Mechanical Engineering, SASTRA University, Thanjavur-613401.
One such material that requires considerable study is Titanium which is relatively a lightweight material and provides excellent mechanical properties.
Methodology Design of Experiments (DoE): The DoE was carried out by considering 4 different factors namely Cutting Temperature(0C), Cutting Velocity(m/min), Time(sec) (in terms of length of machining), and Cutting Tools, the details of which are presented in Table 1 below (depth of cut and the feed are kept constant).
The various factors and levels generated a L18 array details of which are presented below in Table 2.

With the development of oil wells which contain corrosive medium, API standard connection can not meet the requirements of the oil industry, because of its sealing properties and joint strength [1].
This will affect the gauge's performance and shorten its service life seriously.
Otherwise, the depth of heat affected zone also increases, but not increases proportionally.
Grinding force is one of the most important factors in evaluating the performance of grinding process.
The surface layer of workpiece experiences severe plastic strain, the material expands under high grinding temperature and the microstructure changes, all of these factors result in high residual stress on ground surface.

To produce the pressing forms from calcined gypsum the following methods and operations have been used: operations concerning production of gypsum with the best physicochemical and mechanical properties in order to be used for construction of pressing forms (determining the quality of gypsum based on water and plaster ratio; establishing the influence of epoxy and curing solution on the mechanical resistance of the obtained gypsum; determining the influence of lime, boric acid, zinc chloride, sodium chloride on the hardening period of calcined gypsum); production of the models from wood and metal; fixing the model on the gypsum cushion; finding on the model the separation line and restrict the area used for gypsum moulding; applying grease on the model, on the plate under the model, on the walls and on all parts that come in contact with liquid gypsum to be poured; preparation of the gypsum solution.
When producing forming mould from gypsum is difficult cu take in consideration different factors that affect the dimensions of the final part, and for this reason, if some wax models are used, the dimensional and shape errors can be corrected and the moulding form can be produced after the gypsum model executed using one or more sample.
Features high-strength gypsum produced in SUA Gypsum properties Hydrocal industrial white Hydrocal for forming Hydrocal A-11 Hydro- stoun White gypsum for forming Hydrocal For moulding Hydrocal B-11 Gypsum with high dilatation Ratio water - gypsum V/G ; % 38-42 40-42 40-42 32 60-63 54-56 44-48 40-35 Curing time(minutes) 20-40 17-20 16-26 17-25 25-50 25-45 18-23 15-24 Dilation in solidifying gypsum (average) % 0,23 0,125 0,04 0,16 0,19 0,125 0,04 1,5 Minimum compressive strength, the raw Kgf.
Laitinen, Effects of processing and manufacturing of high nitrogen-containing stainless steels on their mechanical, corrosion and wear properties, Journal of Materials Processing Technology 117 (2001) 424–430

Co-deposition was achieved at moderate temperatures in order to maintain the substrates` mechanical properties.
Important factors that affect the efficiency of the conventional steam power plants are the temperature and the pressure of the input steam to the turbine.
These techniques require high temperatures and/or longer times, which limits their use to substrates that can be exposed to high temperature without degradation of their mechanical properties [23].
Therefore CVD-FBR potentially is an important alternative for the deposition of Al-coatings on ferritic steels, since this technique allows the conservation of microstructure and mechanical properties of these types of materials.
Some comments are needed on the expected lifetime of such coatings, and the factors expected to influence the lifetime.

Also, transverse properties of composite are studied in the present work.
Wisnom developed interface elements to study the transverse tensile properties of the composites [13].
The properties of the fibre and the matrix are temperature dependent.
Wisnom, Factors controlling the transverse tensile properties of unidirectional SiC/Ti-6Al-4V.
[13] Wisnom, M.R., Factors affecting the transverse tensile strength of unidirectional continuous silicon carbide fibre reinforced 6061 aluminium.

However, there are few basic data available, at least in the published literatures, regarding the relationships between cold rolling, intermediate annealing and mechanical properties of Inconel 690[10].
The mechanical and corrosion properties of Alloy 690 are noticeably affected by microstructure after the last processes such as cold rolling, annealing and solution heat treatment.
And these changes are close connected with mechanical properties of this alloy.
Annealing temperature is an important parameter affecting the hardness of alloy 690.
A critical strain affecting the hardness of Alloy 690 was determined to be between 15% and 25%.

The deformation induced α´-martensite formation depends on several factors.
In Tab. 2 monotonic mechanical properties at AT, hardness as well as MS- and Md30-temperatures, according to Eichelmann and Angel respectively [2], of the investigated austenitic steels in the solution-annealed state are given.
Mechanical properties and parameters to characterize martensitic transformation sf [MPa] sp0.2 [MPa] hardness HV10 MS [°C] Md30 [°C] α´at fracture [FE-%] AISI 304 638 247 208 -171 12 22 AISI 321 602 208 176 -91 43 36 AISI 348 616 257 177 -66 48 50 Total strain controlled low cycle fatigue tests were performed on a servo-hydraulic testing system with a constant total strain amplitude of ea,t = 1 % at a load ratio of Re = -1, a frequency of 0.2 Hz in the temperature range -60 °C to 25 °C.
The details about the influence of morphology of the deformation induced α´-martensite formation under cyclic loading on mechanical properties are described elsewhere [8].
Magnetic measurements and mechanical behaviour, Part II.

Through such composition, this FRP-concrete composite deck for cable-stayed bridges takes full advantage of the properties of each material and provides durability and lightweight.
Table 2 lists the mechanical properties of FRP panel used for the specimens.
Furthermore, if strength reduction factors of 0.55 and 0.85 are applied respectively for the FRP-concrete composite section and for the reinforced concrete section in the 2-side supported specimen, the FRP-concrete composite deck for cable-stayed bridges satisfies the flexural design moment as shown below.
This reveals that the unavoidable low sectional rigidity of the FRP panel in the transverse direction due to the pultrusion process is not affecting significantly the performance of the deck.
This reveals that the unavoidable low sectional rigidity of the FRP panel in the transverse direction due to the pultrusion process is not affecting significantly the performance of the deck.