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Author’s guide dear authors of publications!

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We accept previously unpublished research contributions in English. According to the executing regulations the volume of your contribution should not exceed 5 pages.

The following materials should be submitted in the terms:

  • Participation application (Attachment_4_PARTICIPATION APPLICATION.doc) is submitted till the 1ST of May 2012.

  • The cover letter with request for publication.

  • The electronic version of the paper – till the 1st of June 2012.

  • The electronic version of author’s background (Attachment_3_AUTHOR`S BACKGROUND.doc).


  • Electronic materials are accepted only in the format of Microsoft Office Word.
    File value should not exceed 10MB.

  • Presentations for the reports are also accepted by e-mail in Microsoft Office PowerPoint format, or as a set of JPEG pictures.

  • The materials can be sent to these e-mail addresses:

  • It is obligatory to specify topic «XVII Congress» in the message (otherwise your contribution will not be received by Organizing Committee)!

Electronic version should contain:

  • The cover letter with request for publication;

    • The paper with figures executed according to the requirements;

    • Authors` background;


Dep. 203, room 106, motor build. (Valeriya Boyko),

room 116, motor build. (Tamara Bozhenenko),

tel.: (+38 057) 7190-540, 788-43-41, 788-47-78.

Skype: congress_khai


COMMISSION OF UKRAINE (bulletins No. 2 & 3, 2008)

Materials submitted for publication should meet the following requirements and be sent till 1.06.2012.


Sheet size – A4 (210x297 mm);


Top and Bottom – 25 mm;

Left – 22,5 mm;

Right – 22,5 mm.


UDC ХХХ.ХХХХ: (Note. UDC – universal decimal code)

Flush paragraph. Italic, 12pt Times New Roman, left alignment, single line spacing.


Author’s Name. Flush paragraph. Italic, bold, 12pt Times New Roman, left alignment, single line spacing.

(Empty line, 10pt, single line spacing)


Organisation, country. Flush paragraph. Lower-case, Italic, bold, 12pt Times New Roman, left alignment, single line spacing.

(Empty line, 10pt, single line spacing)


Flush paragraph. Italic, 12pt Times New Roman, bold, centre alignment, single line spacing.

(Empty line, 10pt, single line spacing)


Flush paragraph. In original language of the paper. The word «Abstract» is not written. The abstract should be not less than 500 symbols and should not exceed 14 strings, font – 10 pt Times New Roman, justified alignment, Italic, 1 line spacing, left indent – 7.5mm.

(Empty line, 10pt, single line spacing)


Flush paragraph. The paragraph starts with a title Key words: (Italic, bold, 10 pt Times New Roman), and then using commas – 6–10 words in original language of the paper (Italic, 10 pt Times New Roman, justified alignment, 1 line spacing, left indent – 7.5 mm).

(Empty line, 10pt, single line spacing)


According to the regulation of Highest Certifying Commission No. 7-05/1 dated 15.01.2003 the paper text should have the following structure:

  • Problem statement in general view and its connections with important scientific and practical problems;

  • Analysis of the last research and publications, referred by the author;

  • Paper purpose (tasks for investigation);

  • Principal material description for the research with full substantiation of scientific results;

  • Research conclusions and future prospects for this research.

The text is formatted in 2 columns 8 cm each, the distance between two columns of text equals 5 mm.

Font – Times New Roman,

Font size 10 points, script interval – normal (neither extended nor condensed),

Line spacing - 1.1,

Alignment - justified,

Automatic hyphenation for words.

Paragraphs should be started with the first line indent (indent ^ 7.5 mm).

Full page coverage (not full page will not be included into publication).


Are submitted as the files with *.TIF or *.JPG extension (grey image, resolution 300 dpi, scale 1:1). Figures must be numbered.


The caption is typed with the font of body text at spacing of one string from the figure; line spacing is single, for example:

Fig. 1. Diagram of compressed air bleed from gas-turbine engine:

1 – energy of incident flow; 2 – air bleed from low-pressure compressor

The caption is centre aligned. The quality of illustrations and graphs should provide easy reading and copying.


The tables should be numbered: Table 1, Table 2, ….etc, (the word Table is placed with right alignment). Table heading is centre aligned. Line spacing is single. Font size can be reduced, if necessary. No abbreviation, except conventional, are allowed in the tables.


Typed in the equation editor MS Equation 2.0, 2.01 or MathType. It is not allowed to use graphic objects, frames and tables for typing. Set up editor settings in the menu:

input sizes:


10 pt

Large index

80 %

Small index

70 %

Large symbol

150 %

Small symbol

90 %

StyleDefine set parameters






Times New Roman


Times New Roman


Times New Roman

Greek Caps


Greek Lows





Times New Roman



Times New Roman

The formula is placed in the centre of the line (flush paragraph), numerical numbering, continuous. Formula number (in parentheses, 10 pt) is placed flush right on the same level as formula or lower. It is not allowed to stretch or compress formula box. Notations should be placed right under the formula, in such a sequence as they are represented in the formula. Each value should be described in the new paragraph with an indent 7.5 mm. The first row of explanations is started with the word “where” (full-out), for instance:


where  – angle between flow and wall;

* – heat-carrier viscosity at temperature Т*;

– general coefficient of the difference between the given heat exchange process and standard one.


Marked (–), enumerated: number format Times New Roman 10pt, indent paragraph 7.5 mm, tabulation after the number is equal to 5 mm.

Sections Headlines:

Headlines of each section should be enumerated 1, 2, …

Font – Times New Roman bold, low-case, 12 pt, centre alignment, single line spacing, flush paragraph, it is separated from the text by empty lines.


When including subsections and subparagraphs, it is necessary to use for each headline:

Font – Times New Roman bold, low-case, 10 pt, centre alignment, single line spacing, flush paragraph, it is separated from the text by empty lines.


When quoting the references in the text, it is necessary to indicate the number in brackets [1]. References numeration is in the order of mention. Bibliographical references are placed at the end of the paper (indent from the last line of the paper is one line is single spacing) and start with the word References, typed low-case (bold, 12 pt, centre alignment, flush paragraph). The sources of references are executed according to the bibliographic requirements of National Standard GOST 7.1:2006 (italic, 10 pt, justified alignment, paragraph indent 7.5 mm, single line spacing).


Authors’ information:

Information about each author of contribution article is submitted.

Last name, First name, academic degree, academic rank, position, organization, city of organization (university), country, e-mail, and telephone number.

UDC 629.735


National Aerospace University named after N. E Zhukovsky “KhAI”


Analytical review of researches on drilling of stacks “Carbon Plastic/Titanium Alloy” (CMC/Ti) using standard geometry tool made of different cutting materials is submitted. The following drill materials were used: high speed steel (HSS), high-speed cobalt (HSS-Со) and carbide (high-alloy material). It is noticed that on the interface of C/Ti high temperatures cause damages of composite around the hole. Different mechanical and thermal properties of stack materials influence the tool life and hole quality, regardless of cutting tool material. Less tool life is typical for high spindle speeds and low feeds. It is revealed that carbide drills have longer tool life, minimal surface damages and cause less stack high temperature damages.

Key words: carbon plastic, drilling, tool wear, high temperature damage, roughness, burr.


By the beginning of the third millennium application of polymeric composite materials (PCM) and metallic laminated composite materials (MCM) has reached substantial scale in various branches of industry. Composites are often used in combination with other materials for hybrid structures that are characterized by higher strength with minimal weight in comparison with a metal.

For a long time aerospace industry tends to increase the amount of composite and titanium alloy usage owing to their high mechanical characteristics, which can be guaranteed at high loads in military and civil airplanes. Currently bolt joint and riveting remain to be basic methods of the assembly of the composite skins with metal or composite frame. For all that very important factor, influencing the assembly life, is the performance quality of holes for fastenings [1]. In order to minimize the setting error, composite panels and frame elements as a rule are drilled simultaneously in a stack [2]. However, drilling of mixed stack, for instance….

In this paper we give analysis of the problem of mechanical drilling of CMC/Ti stack, describe obtained parameters of the hole quality (surface smoothness and damages).

1. Experimental part

In the tests PCM bismaleimide graphite was used, designed by Boeing company, consisting of graphite fibers IM-6 and thermoreactive matrix 3501-6 with layers orientation [45/90/-45/0/45/0/-45/90/-45/0/45/90/-45/90/90]s. CMC thickness equals 7.62 mm (thickness of monolayer is equal to 0.2 mm), thickness of Ti6Al4V alloy – 3.1 mm. [11]

Basing on the research results, drilling of CMC/Ti stack was performed from the side of carbon plastic. Such drilling direction results in the least delamination at the drilled CMC/Ti. Drilling tests were performed in the modified vertical milling NC machine with gear box and cutting fluid application. Machine engine provided five values of spindle speed – 325, 660, 1115, 1750 and 2750 rpm. Three types of materials were used for drills body: high-speed steel (HSS), high-speed cobalt (HSS-Co) and carbide (high-alloy material). Selected drill types and drill body materials cover all range of applied drill geometry and hardness levels.

The tests were aimed at the research of influence of cutting materials and manufacturing process parameters (feed and spindle speed) on the tool wear and hole quality. The tool wear was measured along rake and relief drill surfaces with the instrumentality of optical microscope.

The quality of the hole in Ti-alloy and CMC was estimated according to material integrity, roughness and burr criteria. For determination of the drilled holes quality the microscopy methods were used: scanning electron microscope was used to investigate separate fragments of the hole surface, and also to study damage propagation in each layer.

^ 2. Findings analysis

The CMC/Ti specimens drilled from the side of carbon plastic using HSS-Со drill (feed 0.13 mm/rev, rotating velocity 660 rpm) are submitted in fig. 1. It is obvious, that burr dimensions grow with each following drilled hole …

Influence of drill material on tool wear, CMC damage, burr dimensions in Ti and hole roughness will be analyzed later.

^ 2.1. Hole making and tool wear

In the Fig.2 there are several microcopies, showing drill wear. HSS drills (fig.2, b) have the highest tool wear after minimum number of drilled holes. HSS-Со and HSS drills (fig.2, b and c respectively) have lateral and grooving wear. Small lateral wear started to form on the carbide drill (fig.2, a). For all types of drills the smallest wear was observed on the drill point. Also the utterly vast tool wear was discovered on the tool margins of HSS and HSS-Со drills. The majority of holes appeared to be damaged when using HSS and HSS-Со drills as compared with drilling with carbide drills.

Tool wear was determined with the use of NC system (coming up the maximal axial force of about 3700 N the drill was considered to be worn) or visually, observing cutting edge wear and smoke.

a b c

Fig. 2. Microcopies of wear:

a – carbide; b – HSS; c – HSS-Co drills

^ 2.2. Surface quality

Surface smoothness in the CMC/Ti stack depends on the spindle speed and the feed. Hole surface in the plate of Ti alloy was smoother in comparison with its surface in composite. The fact is determined that the application of HSS and HSS-Со drills at low feeds results in higher values of roughness in Ti alloy, while it is not observed for carbide drills. There is a single explanation of this fact – at low feed the temperature of HSS and HSS-Co drills increases insignificantly, however intensive tool wear occurs during the pass through the CMC. In its turn, the worn drill in the Ti plate with its high temperature increases the roughness of the hole surface. The roughness of the hole in the composite increases at the very high feed, because the drill tends to draw the fibres instead of cutting them (fibres rupture occurs). Matrix rupture in cutting zone takes place at very high spindle speeds because of high temperatures (approximately 270°C). At first the boundary layer “matrix-filament” is loosed, that results in serious damage of the composite. Also melting takes place that result in decrease of roughness. However, if the fibres are drawn out of the matrix, then it causes damages, increasing roughness thereby.


Research of drilling the holes in the CMC/Ti stacks was carried out with the use of drills made of different materials; parameters of manufacturing process were also varied. The most essential problem that arose during specimen drilling was low heat conductivity of Ti alloy, causing intensified heat release in the drilling zone and increase of tool temperature.

Carbide drills are recommended for application for drilling CMC/Ti stack at the rotation speed of 660 rpm and feed of 0.08 mm/rev.


1. Abrate S. Machining of composite materials in composites engineering handbook [Text] / S. Abrate. – New York: Marcel Dekker, 1999. – P. 777-810.

2. Hung N.P. Machining of metal matrix composites in machining of ceramics and composites [Text] / N.P. Hung, N.L. Loh, V.C. Venkatesh. – New York: Marcel Dekker, 1999. – P. 295-356.


11. Ramulu M. A study on the drilling of composite and titanium stacks [Text] / M. Ramulu, T. Branson, D. Kim // Composites Structures. – 2001. – Vol. 54. – P. 67-77.

12. Capitelli, M. Collision integrals of high temperature air species [Text] /M. Capitelli, C. Gorse, S. Longo //Journal of thermophysics and heat transfer.

Submitted to the editorship 01.06.2012

Reviewer: Ph.D, professor F.В. Novikov, National aerospace university named after N.Y. Zhukovsky “KhAI”, Kharkiv, Ukraine.

Place for abstracts in Russian and in Ukrainian, which fills by Organizing Committee.

Vorobyov Yuri – Candidate of Engineering Sciences, Assistant Professor, Assistant Professor of Aircraft Technology Department, National aerospace university named after N.Y. Zhukovsky “KhAI”, Kharkiv, Ukraine,

Nikolenko Alexander – Head of Laboratory of educational-scientific centre of information technologies, National aerospace university named after N.Y. Zhukovsky “KhAI”, Kharkiv, Ukraine, e-mail:

Vorobyov Alexander – the 3-year student of rocket-space engineering faculty, National aerospace university named after N.Y. Zhukovsky “KhAI”, Kharkiv, Ukraine


Author’s guide dear authors of publications! iconAuthor’s guide dear authors of publications!
«Xviii congress» in the message (otherwise your contribution will not be received by Organizing Committee)!
Author’s guide dear authors of publications! iconInstructions for publications in the proceedings and in the monograph of authors group

Author’s guide dear authors of publications! iconGuide for Authors

Author’s guide dear authors of publications! iconGuidelines for Authors
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Author’s guide dear authors of publications! iconAuthor`s background

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