Masters Theses


Fangquan Wang


"Functionally Gradient Materials (FGMs) feature smooth transition from one material to another within a single object. FGMs modeling is considered to be one of the new challenges in Computer Aided Design (CAD) area. To overcome this challenge, this thesis presents a composite approach to model FGMs. The input in STL format can be meshed and voxelized in FGMs modeling system. The material composition in each voxel can be generated from multiple different types of control features. And LTI filters including Gaussian Filter and Average Filter are applied to blur default material features in order to generate FGMs inside models. The LTI filtering method gives an effective and controllable approach to distribute material composition in FGMs area. Forbidden zone mapping function is also proposed in this thesis to actively eliminate the forbidden zone in FGMs modeling. Unwanted material composition can be effectively removed from the modeling process while the original material transition trend is preserved. At last, Erosion Function is introduced in the thesis to generate FGMs area between outer portion and inner portion of an object. Material composition contour level map is generated to help the tool path plan for Additive Manufacturing (AM)"--Abstract, page iii.


Liou, Frank W.

Committee Member(s)

Leu, M. C. (Ming-Chuan)
Pan, Heng


Mechanical and Aerospace Engineering

Degree Name

M.S. in Manufacturing Engineering


Missouri University of Science and Technology

Publication Date

Summer 2016


vii, 40 pages

Note about bibliography

Includes bibliographical references (pages 38-39).


© 2016 Fangquan Wang, All rights reserved.

Document Type

Thesis - Open Access

File Type




Subject Headings

Functionally gradient materials
Computer-aided design
Composite materials -- Computer simulation

Thesis Number

T 10986

Electronic OCLC #