Research Article StudyoftheEffectofProcessParametersonSurfaceProfile Accuracy in Single-Point Incremental Sheet Forming of AA1050-H14 Aluminum Alloy Abdulmajeed Dabwan , 1 AdhamE.Ragab , 1 MohamedA.Saleh, 2 SaqibAnwar, 1 AtefM.Ghaleb, 1 andAteekhUrRehman 1 1 King Saud University, Department of Industrial Engineering, College of Engineering, Riyadh 11421, Saudi Arabia 2 Private Consultants, Cairo, Egypt Correspondence should be addressed to Abdulmajeed Dabwan; abmj999@yahoo.com Received 30 September 2019; Revised 21 November 2019; Accepted 3 December 2019; Published 8 January 2020 Academic Editor: Tomasz Trzepieci´ nski Copyright © 2020 Abdulmajeed Dabwan et al. is is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Single-point incremental forming is an innovative ﬂexible and inexpensive technique to form sheet products when prototypes or small batches are required. e process allows complex geometries to be produced using a computer numerical control machine, eliminating the need for a special die. is study reports on the eﬀects of four important single-point incremental forming process parameters on produced surface proﬁle accuracies. e proﬁle accuracy was estimated by measuring the side angle errors and surface roughness and also waviness and circularity of the product inner surface. Full factorial design of experiments was used to plan the study, and the analysis of variance was used to analyze and interpret the results. e results indicate that the tool diameter (d), step depth (s), and sheet thickness (t) have signiﬁcant eﬀects on the produced proﬁle accuracy, while the feed rate (f ) is not signiﬁcant. As a general rule, thin sheets with greater tool diameters yielded the best surface quality. e results also show that controlling all surface quality features is complex because of the contradicting eﬀects of, and interactions between, a number of the process parameters. 1.Introduction Incremental sheet forming (ISF) is a newly developed technique for the manufacturing thin-sheet metal compo- nents, in which a computer numerical control (CNC) ma- chine is used to produce an unlimited variety of geometries by means of a simple generic tool. It oﬀers a number of advantages compared to traditional sheet metal processes, including greater formability limits, lower initial costs, shorter lead-times, and greater process ﬂexibility [1]. e process is suitable for producing prototypes and small batch production in a number of ﬁelds, including the automotive industry, the aerospace industry [2], housing, medical im- plants [3], thin shell dies, and biomedical components [4]. In the ISF process, a simple-shaped forming tool is at- tached to a general-purpose CNC milling machine, and as the machine table moves according to a preloaded code, the tool applies a preprogrammed deforming load to a sheet metal workpiece clamped to the machine table. e applied load deforms the sheet incrementally into a predeﬁned shape. e ISF processes can be categorized into two primary types: single-point incremental forming (SPIF) and two- point incremental forming (TPIF). e diﬀerence between the types is the use of a supporting die underneath the workpiece in TPIF [5]. Iseki and Kumon [6] were the ﬁrst to develop an in- cremental forming process. Iseki et al. [7] developed the SPIF process by deforming sheet metal along a path of contour lines using a ball-nosed tool. A number of studies have been conducted on SPIF to investigate the inﬂuence of process parameters on geometric accuracy [8] and surface quality [9]. In addition, studies have been presented on the Hindawi Advances in Materials Science and Engineering Volume 2020, Article ID 7265941, 14 pages https://doi.org/10.1155/2020/7265941