This paper deals with a technique to transform a multiaxial stress and strain-time sequence (in service recorded) in a simplified sequence. This simplified sequence is shorter than the original one and equivalent in terms of damage and lifetime: the number of simplified sequences to crack initiation is equal to the number of original sequences. The...
While threaded holes made by cutting taps result in material removal, in form tapping, the tap displaces the work material by plastic flow to form the thread section. The aim of the present work is to study, both experimentally and analytically, the 3D-plastic flow in form tapping of low-alloy steels. An experimental technique for producing and mea...
http://www.tandfonline.com/doi/full/10.1080/01449290500167832#.UqHyfoGZ_7o / This paper shows an iterative process of design and evaluation of icons for future interactive TV services. In doing the RNRT (French National Network of Research in Telecommunications) iTV project, we tried to generate icons easy to identify, associate and memorise for 32...
Early stages of the design process are often based on designers| experience; assumptions and irreversible decisions restricting the solution space are taken. It is difficult to take into account simultaneously every requirement imposed by the different phases of the product life-cycle. In this paper, a method is proposed to perform the analysis of ...
This paper addresses the designers’ activity and in particular the way designers express an object shape in 2D sketches through character lines and how these lines form a basis for sketching shapes in 3D. The tools currently available in commercial CAS/CAD systems to manipulate the digital models are still not sufficiently suited to support design....
The purpose of this paper is to present original concepts offering an uncertainty control advancement for measuring machines. Those concepts were developed from the analysis of phenomena that reduce the machine accuracy constructed around principles of standard architecture. A machine being developed is a concrete materialization of those concepts....
This paper aims at studying new ways of users integration in “emotional Design” or “Kansei engineering systems”. The main goal of this study was the integration of the trend factor in design, with an early emotional evaluation of “Trend cards” produced by the designers. After a definition of the study context, we explain the experimental protocol w...
This paper aims to propose a new interpretation of several energy based critical plane high cycle fatigue criteria. More exactly, the meaning of several global energy based criteria is detailed from the calculation of normal and shear work on a critical plane. This study is limited to multiaxial fatigue under constant amplitude and synchronous load...
This paper aims to show the key role of the intermediate representations (IR) in the design process and especially in the car design process. For a better understanding of the concept of design, which is by nature conceptual, we propose to study the concept of IR. To this end, we will present the three following parts: description of IR in the desi...
The present work is devoted to the investigation of fatigue crack initiation and growth in middle-cycle fatigue (∼105 cycles). Smooth specimens made of 35CrMo4 quenched and tempered steel were loaded in fully reversed plane bending. Temperature field evolution in time was recorded with an infrared camera. The experimental results show that the loca...
