TITLE

Adaptive toolpath deposition method for laser net shape manufacturing and repair of turbine compressor airfoils

AUTHOR(S)
Huan Qi; Azer, Magdi; Singh, Prabhjot
PUB. DATE
July 2010
SOURCE
International Journal of Advanced Manufacturing Technology;Jul2010, Vol. 48 Issue 1-4, p121
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The aim of this research is to develop a geometry-based adaptive toolpath laser powder deposition method for the manufacturing and repair of advanced turbine engine compressor or blisk airfoils. To realize that, the design of experiments (DoE) method was used to study the deposition geometric responses of a single-pass multilayer Inconel 718 laser powder deposition process. In the first step, the processing feasibility domain was quickly explored with a set of screening DoE. The dominating factors, which have significant effects on the deposition bead width and maximum stable layer height, were identified among the various deposition parameters. Based on this result, a more accurate quadratic regression transfer function was developed to predict the deposition bead width as a function of the dominating processing parameters identified in the first step. With the transfer function, deposition toolpath for net shape airfoil fabrication or repair was designed with predetermined bead width, stable layer height, and bead overlap ratios. Adaptive deposition bead widths were obtained by varying the laser power according to the transfer function, so that a constant bead width overlap ratio was maintained. Finally, compressor and blisk airfoils repaired by the geometry-based adaptive toolpath deposition method are demonstrated.
ACCESSION #
48586970

 

Related Articles

  • Porosity of solid and cored turbine blades of aircraft engines. Roskosz, StanisÅ‚aw; Nawrocki, Jacek; Kubiak, Krzysztof // Solid State Phenomena;2014, Vol. 226, p115 

    Paper presents results of quantitative evaluation of porosity conducted on big, thin walled airfoil turbine blades made from Inconel 713C alloy. To decrease mass, blades are design and manufacture like thin walled cored castings. Manufacturing of big thin walled casting airfoil blades is...

  • Design of the blades of small horizontal axis wind turbines. LIU Quan; ZHEN Zhen // Applied Mechanics & Materials;2014, Vol. 741, p23 

    According to the existing wind turbine blade design of classical theory to design the shapes of blades, choosing the standardized airfoils, using the parameters of each section of the blade to build 3D modeling by Pro/E software, using ANSYS finite element analysis software to determine the...

  • Adaptive machining shows its mettle in manufacture and repair. Walton, Paul // Modern Power Systems;Apr2002, Vol. 22 Issue 4, p28 

    Focuses on the use of adaptive machining on manufacturing and repairing of gas turbine blades. Accuracy level of adaptive machining; Technique on the development of an adaptive machining application; Problems encountered during turbine repair.

  • Modernizing Geothermal Steam Turbines to Improve Reliability and Efficiency. Beverly, James // Power Engineering;Nov2010, Vol. 114 Issue 11, p174 

    The article discusses breakthroughs in modernizing older geothermal steam turbines to improve efficiency and reliability similar to those of newer models. Best maintenance practices include stress reducing features, use of titanium and noble alloy Inconel. It says that the installation of large...

  • A novel spiral machining approach for blades modeled with four patches. Shan, Chen-Wei; Zhang, Ding-Hua; Liu, Wei-Wei; Ren, Jun-Xue; Lin, Xiao-Jun // International Journal of Advanced Manufacturing Technology;Nov2009, Vol. 43 Issue 5/6, p563 

    This paper aims at developing a novel spiral machining technique for four- or five-axis milling of blades. The main contributions are twofold. First, detailed algorithms are presented to model the blade surface with the idea that it can be separated into four patches, i.e., the pressure surface,...

  • Stiffness helps turbine blades stand up to impact.  // Professional Engineering;02/26/97, Vol. 10 Issue 4, p46 

    Describes a design for turbine blades. Stiffness quality that makes turbine blades stand up to impact; Construction of aerofoils; Profile of the blade in a gas turbine; Arrangement of internal stiffeners in logarithmic pattern.

  • Ultraprecision Machining of Inconel 718 with Nanometric Finish. Oluwajobi, Akinjide Olufemi; Obi, Stanley Chimezie; Xun Chen // Journal of Materials Science & Engineering;2011, Vol. 5 Issue 4, p406 

    Abrasive machining, with the potential of machining complex/difficult to machine materials and the advantage that the failure of one cutting edge doesn't affect the overall process, is still a choice process today. The ability of the process to achieve nanometre surface finishes is now a...

  • High-speed welding of thin Inconel. Weatherford, Jerry; Murphy, Shawn // Industrial Laser Solutions;Mar2005, Vol. 20 Issue 3, p5 

    The article focuses on the laser technology utilized in the welding process of thin Inconel. Each Inconel plate is 0.008 inch thick and has 10 football- and 10 triangle- shaped features that must be precisely aligned with one W plate and one "B" plate on top of the other. Avco-Lycomirig chose...

  • Moldmakers Are Increasing Business And Profits with Aerospace Work. Toensmeier, Patrick A. // Moldmaking Technology Magazine;May2008, Vol. 11 Issue 5, p70 

    The article reports on the expansion of the moldmaking industry to aerospace work. It states that moldmakers are looking for a new business wherein there is less outsourcing, offshore competition, and pressure. Mold shops are looking forward to work in aerospace, both in aircraft and military...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics