Creation of Body Surfaces From Reverse-Engineered Components

In the automotive industry or in similar industries, body panels need to be perfectly smooth for visual and aerodynamic reasons. In some cases, the component is a hand-made body part that will require a suitable CAD model for further development and manufacturing. Such a smooth CAD model can only be produced through reverse-engineering and CAD procedures that will make use of accurate surface reconstruction. This paper describes a reverse-engineering procedure for the production of a suitable CAD mesh from which surface reconstruction can take place. It then analyzes and compares three approaches assessing the continuity and the quality of each set of NURBS patches: automatic, semiautomatic, and completely manual surfacing. Recommendations are made for each method when creating CAD surfaces. Finally, a procedure is suggested to optimize the time and the quality of the final CAD model.

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Using Contactless Scanning for Quality Control of Automotive Parts

Materials Science Forum ◽

10.4028/www.scientific.net/msf.862.324 ◽

2016 ◽

Vol 862 ◽

pp. 324-333

Author(s):

Radomír Mendřický

Keyword(s):

Automotive Industry ◽

Complex Shape ◽

Optical Methods ◽

Cad Model ◽

Quality Inspection ◽

3D Measurement ◽

Production Experience ◽

Automotive Parts ◽

3D Scanners

The article presents the research of use of modern 3D measurement contact-less methods for quality inspection in automotive industry production. Experience with measuring parts and functional assemblies of complex shape and advantages of the optical methods of digitization are shown on a practical example of analysis of dimensional stability of car decorative strip plastic mouldings. The goal is to demonstrate that the modern methods of dimensional analysis of 3D products can significantly participate in optimization of the manufacturing process and ensuring higher quality of the products.Contact-less 3D systems, so called 3D scanners, were used for the measuring purposes. With their help, the tested sample were digitized in high resolution, and he obtained models of real parts underwent a thorough inspection of precision of shape and dimensions. The attention was directed primarily at the problematic spots – deviation of the strip ends when compared to the nominal CAD model. The analysis was performed using various alignment to the CAD model, thus contributing to finding context with respect to mounting points on the vehicle rails. Concurrently, an influence of galvanic plating on the accuracy of the product was studied.

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Reverse Engineering in the Design of a Plastic Part

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.201-203.814 ◽

2011 ◽

Vol 201-203 ◽

pp. 814-817

Author(s):

Chun Hua Sun ◽

Zhu Wei ◽

Li Li Yang

Keyword(s):

Reverse Engineering ◽

Surface Reconstruction ◽

Surface Patch ◽

Cad Model ◽

Product Cycle ◽

Accuracy Control ◽

Plastic Part ◽

Reconstruction Process ◽

Surface Patches ◽

Plastic Parts

Reverse engineering has been widely recognized as a central step in a product cycle of designing and manufacturing. However, major problems with current reverse engineering technology are the inefficient surface reconstruction process, lack of digitizing accuracy control in the data digitization process, and bottlenecks resulted from huge amounts of digitized surface points in the surface modeling process. Moreover, under this limitation, modern concurrent engineering concepts are difficult to be applied to obtain optimal product process. This paper presents a case study on the reverse designing of a plastic part. The study applies a developed reverse engineering approach to reconstruct surface--a series of advanced algorithms, including segmentation, simplification, extraction, fitting curves and reconstruction surface. Two orthogonal curves, which are fitted from the digitized points, are taken as base curves of a ruled surface patch. All surface patches are merged into a whole surface by trimming and chamfering. A CAD model is constructed based on the whole surface. The approach integrates surface digitizing and modeling processes of a plastic part into surface reconstruction process. Using the approach, accurate product CAD model can be efficiently generated and the product design cycle of plastic parts can be successfully linked.

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Surface Reconstruction of Auto Outer Door Panel Based on Reverse Engineering

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.299-300.1248 ◽

2011 ◽

Vol 299-300 ◽

pp. 1248-1251

Author(s):

Guo Hong Tian ◽

Xiu Chunb Wu ◽

Xue Shenc Su ◽

Kun Li

Keyword(s):

Data Processing ◽

Reverse Engineering ◽

Surface Reconstruction ◽

Point Clouds ◽

Contour Line ◽

Cad Model ◽

Actual Object ◽

Line Feature ◽

Door Panel

The point clouds data of auto outer door panel is measured with CMM. After data processing and extracting of contour line feature, the surface is reconstructed in CATIA software. With the example, the process of reverse design how to acquire CAD model of product from actual object or sample is studied.

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Reverse Engineering in the Manufacturing of Forming Die

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.88-89.10 ◽

2011 ◽

Vol 88-89 ◽

pp. 10-15

Author(s):

Zhi Bo Yan ◽

Hong Wei Chen

Keyword(s):

Reverse Engineering ◽

Surface Reconstruction ◽

Information Acquisition ◽

New Products ◽

Advanced Manufacturing ◽

Cad Model ◽

Research Focus ◽

Surface Information ◽

Stamping Die ◽

Key Technologies

Reverse Engineering, also known as reverse engineering, new products has become an important way for design and development is one of the field of advanced manufacturing in recent years, the research focus. This paper discusses the surface information acquisition, surface reconstruction, CAD model creation and stamping blank reverse key technologies to solve the conventional time-consuming measurements, detection is difficult and costly problem; more complete establishment of a suitable complex stamping die reverse engineering methods and tools, dies for similar products in reverse reference.

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Letter to the Editor: The Continuing Challenge of Evaluating RSD Impairment and Disability

Guides Newsletter ◽

10.1001/amaguidesnewsletters.1998.sepoct05 ◽

1998 ◽

Vol 3 (5) ◽

pp. 8-10

Author(s):

Robert L. Knobler ◽

Charles N. Brooks ◽

Leon H. Ensalada ◽

James B. Talmage ◽

Christopher R. Brigham

Keyword(s):

Disability Evaluation ◽

Body Part ◽

Loss Of Function ◽

Regulatory Requirements ◽

Major Cardiac Event ◽

Clinical Scenarios ◽

Impairment Score ◽

Occupational Activities ◽

The Difference

Abstract The author of the two-part article about evaluating reflex sympathetic dystrophy (RSD) responds to criticisms that a percentage impairment score may not adequately reflect the disability of an individual with RSD. The author highlights the importance of recognizing the difference between impairment and disability in the AMA Guides to the Evaluation of Permanent Impairment (AMA Guides): impairment is the loss, loss of use, or derangement of any body part, system, or function; disability is a decrease in or the loss or absence of the capacity to meet personal, social, or occupational demands or to meet statutory or regulatory requirements because of an impairment. The disparity between impairment and disability can be encountered in diverse clinical scenarios. For example, a person's ability to resume occupational activities following a major cardiac event depends on medical, social, and psychological factors, but nonmedical factors appear to present the greatest impediment and many persons do not resume work despite significant improvements in functional capacity. A key requirement according to the AMA Guides is objective documentation, and the author agrees that when physicians consider the disability evaluation of people, more issues than those relating to the percentage loss of function should be considered. More study of the relationships among impairment, disability, and quality of life in patients with RSD are required.

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Cognitive Health Counseling 40+

Zeitschrift für Gesundheitspsychologie ◽

10.1026/0943-8149/a000085 ◽

2013 ◽

Vol 21 (1) ◽

pp. 24-33 ◽

Cited By ~ 1

Author(s):

Anne Eschen ◽

Franzisca Zehnder ◽

Mike Martin

Keyword(s):

Outcome Variable ◽

Pilot Phase ◽

Subjective Memory ◽

Cognitive Health ◽

Health Counseling ◽

Agents Of Change ◽

Main Outcome Variable ◽

Further Development

This article introduces Cognitive Health Counseling 40+ (CH.CO40+), an individualized intervention that is conceptually based on the orchestration model of quality-of-life management ( Martin & Kliegel, 2010 ) and aims at improving satisfaction with cognitive health in adults aged 40 years and older. We describe the theoretically deduced characteristics of CH.CO40+, its target group, its multifactorial nature, its individualization, the application of subjective and objective measures, the role of participants as agents of change, and the rationale for choosing participants’ satisfaction with their cognitive health as main outcome variable. A pilot phase with 15 middle-aged and six older adults suggests that CH.CO40+ attracts, and may be particularly suitable for, subjective memory complainers. Implications of the pilot data for the further development of the intervention are discussed.

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Hospital chaplains as ethical consultants in making difficult medical decisions

Journal of Medical Ethics ◽

10.1136/medethics-2020-107096 ◽

2021 ◽

pp. medethics-2020-107096

Author(s):

Waldemar Głusiec

Keyword(s):

Roman Catholic ◽

Medical Decision ◽

Medical Decisions ◽

Hospital Chaplains ◽

Specialist Knowledge ◽

Hospital Ethics ◽

Bioethical Education ◽

Further Development

Background and aimsFew Polish hospitals have Hospital Ethics Committee (HECs) and the services are not always adequate. In this situation, the role of HECs, in providing, among others, ethical advice on the discontinuation of persistent therapies, may be taken over by other entities. The aim of our research was to investigate, how often and on what issues hospital chaplains are asked for ethical advice in reaching difficult medical decisions.MethodsA survey of 100 Roman Catholic chaplains was conducted, that is, at least 10% of all chaplains currently working in Polish hospitals.ResultsOf the participants, 29% confirmed receiving requests for advice in making a morally difficult medical decision. Receiving this type of request was not conditional on the place of their service, duration of their pastoral mission or HEC membership. The largest group of chaplains (21%) encounter questions concerning the ethical dilemmas associated with discontinuing persistent therapy. Patients and their families most often raise issues related to the methods of birth control, and the medical staff raise the issue of termination of pregnancy—as reported by 9% and 15% of chaplains, respectively. Most of the chaplains asked for help (79%) experience a deficit of specialist knowledge in the area of medicine or ethics.ConclusionsIn order to improve the quality of ethical consultations in Polish hospitals, in addition to further development of HECs, it is postulated to develop a system for bioethical education of chaplains.

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A comparison between economic and organic store brands

International Journal of Retail & Distribution Management ◽

10.1108/ijrdm-07-2016-0107 ◽

2017 ◽

Vol 45 (12) ◽

pp. 1298-1316 ◽

Cited By ~ 3

Author(s):

Magali Jara ◽

Gérard Cliquet ◽

Isabelle Robert

Keyword(s):

Brand Equity ◽

Perceived Quality ◽

Purchase Intentions ◽

Path Model ◽

Added Value ◽

Store Brand ◽

Store Brands ◽

Content Type ◽

Further Development

Purpose The purpose of this paper is to tackle the issue of store brand equity by considering two store brand’s positioning strategies: those with high perceived added value (the organic store brands), as opposed to economic brands. It takes place in the current environmental considerations showing the important role played by the packaging in determining the store brand equity. Design/methodology/approach A PLS Path model divided into four sub-models enables the authors to make specific predictions about customers’ purchase intentions. It also provides a concise operational calculation of the brand equity of each studied store brand. Findings Results show that economic brands build their equity with reinforced packaging, and organic brands maximise their brand equity by using simple packaging. In general, reinforced packaging improves the perceived quality of economic store brands but destroys that of organic brands. The calculations of overall equity scores for each studied store brand reveal that economic brands could benefit from further development whilst organic brands already maximise their equity. Practical implications Results will enable large retailers to develop effective campaigns focussing on perceived quality and more specifically by designing packaging that are suitable for the positioning of their brands – a simple packaging for organic brands and a reinforced packaging for economic brands to maximise customers’ value. Originality/value This is one of the first studies to deepen the store brand equity, comparing two contrasting types of brands, by studying specifically variations of the levels of customers’ perceived quality depending of two types of packaging.

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