Cure and Rheological Analysis of Reinforced Resins for Stereolithography

2008 ◽  
Vol 587-588 ◽  
pp. 563-567 ◽  
Author(s):  
J. Gaspar ◽  
P.J. Bártolo ◽  
Fernando M. Duarte
Keyword(s):  
Product Development ◽  
New Product Development ◽  
Rheological Behaviour ◽  
International Markets ◽  
Product Development Process ◽  
Powder Size ◽  
Product Complexity ◽  
Polymeric Systems ◽  
Development Context ◽  
Metallic Parts

The rising of consumers’ demands and an ever increasing pressure of international markets imposed a deep change in the product development process to respond to an increasing product complexity and higher quality, as well to the need to promptly introduce products into the market. Stereolithography plays an important role on this new product development context. This technology produces models for thermosetting resins through a polymerisation process that transforms liquid resins into solid materials. In this work, a new route to produce metallic parts through stereolithography is explored. The curing analysis of hybrid reinforced polymeric systems, polymerised through radicalar or/and cationic mechanisms, is investigated. The rheological behaviour of these polymeric systems is also evaluated due to its importance for recoating. The influence of other processing and material characteristics like light intensity, initiator concentration, low powder size of metallic powders, degree of dilution, etc. is also investigated.

Metallic Stereolithography

2008 ◽  
Author(s):  
Jorge Gaspar ◽  
Paulo Jorge Ba´rtolo
Keyword(s):  
Product Development ◽  
New Product Development ◽  
Rheological Behaviour ◽  
International Markets ◽  
Product Development Process ◽  
Powder Size ◽  
Product Complexity ◽  
Polymeric Systems ◽  
Development Context ◽  
Metallic Parts

The rising of consumers’ demands and an ever increasing pressure of international markets imposed a deep change in the product development process to respond to an increasing product complexity and higher quality, as well to the need to promptly introduce products into the market. Stereolithography plays an important role on this new product development context. This technology produces models for thermosetting resins through a polymerisation process that transforms liquid resins into solid materials. In this work, a new route to produce metallic parts through stereolithography is explored. The curing analysis of hybrid reinforced polymeric systems, polymerised through radicalar or/and cationic mechanisms, is investigated. The rheological behaviour of these polymeric systems is also evaluated due to its importance for recoating. The influence of other processing and material characteristics like light intensity, initiator concentration, powder size of metallic powders, degree of dilution, etc. is also investigated.

Reliability and Accuracy of Bootstrap and Monte Carlo Methods for Demand Distribution Modeling

2011 ◽  
Author(s):  
Swithin S. Razu ◽  
Shun Takai
Keyword(s):  
Monte Carlo ◽  
Product Development ◽  
Conjoint Analysis ◽  
New Product Development ◽  
Demand Uncertainty ◽  
New Product ◽  
Product Development Process ◽  
Choice Data ◽  
Product Concept ◽  
Demand Distribution

Estimation of demand is one of the most important tasks in new product development. How customers come to appreciate and decide to purchase a new product impacts demand and hence profit of the product. Unfortunately, when designers select a new product concept early in the product development process, the future demand of the new product is not known. Conjoint analysis is a statistical method that has been used to estimate a demand of a new product concept from customer survey data. Although conjoint analysis has been increasingly incorporated in design engineering as a method to estimate a demand of a new product design, it has not been fully employed to model demand uncertainty. This paper demonstrates and compares two approaches that use conjoint analysis data to model demand uncertainty: bootstrap of respondent choice data and Monte Carlo simulation of utility estimation errors. Reliability of demand distribution and accuracy of demand estimation are compared for the two approaches in an illustrative example.

The bottom of the pyramid: an integrative approach

2015 ◽  
Vol 10 (1) ◽  
pp. 2-15 ◽  
Author(s):  
Samuel Rabino
Keyword(s):  
Product Development ◽  
New Product Development ◽  
Knowledge Economy ◽  
Action Plan ◽  
Product Development Process ◽  
Integrative Approach ◽  
Bottom Of The Pyramid ◽  
Global Knowledge ◽  
Conceptual Approach ◽  
Content Type

Purpose – The purpose of this paper is to examine the concept of the bottom of the pyramid (BOP) in the context of the knowledge economy. Design/methodology/approach – A conceptual approach integrating the BOP perspective, diffusion of innovations, and the new product development process. Findings – This paper structures a framework that might be helpful in advancing the competitiveness and product development capabilities of multinationals. Practical implications – The paper provides managers of multinational companies with an organized way of evaluating opportunities in BOP markets in the context of a global knowledge economy. Originality/value – The paper incorporates ideas and theories from three business and marketing fields into a framework that could be used as basis for an action plan.

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