Distribution of Articles published per year
(1970 - 2017)
(1970 - 2017)
Total number of journals
BOOK-CHAPTER 0 Reads 0 Citations Compatibility Welding Parameters with the Results Obtained in Testing of Fracture Mechanics in HSLA Steel Published: 01 January 2017
Handbook of Research on Supply Chain Management for Sustainable Development, doi: 10.4018/978-1-5225-0651-5.ch008
Many investigations led to show that no crack begins to propagate to an increase of stress intensity factor. The life of the components of a structure containing premature cracks, can be governed by the degree of subcritical crack propagation. Thus, knowledge of crack propagation to determine the fatigue of the structure is necessary. One problem of steels of high resilience is their low toughness in the HAZ, when they are welded with a high heat input. In this work we have studied nine specimens that have been welded under a submerged arc welding process controlling the welding parameters and checking in the HAZ of such specimens, critical tensions at the ends of the cracks, the critical cracks lengths and stress intensity factors. It is intended to check that the parameters that indicate the values of fracture mechanics in the HAZ, after heat cycle to which the steel has undergone, under a process with a maximum heat input of 2.327kJ /mm, they are still valid, with the welding parameters applied. It is checked a correlation between the theoretical and experimental values.
PROCEEDINGS-ARTICLE 1 Read 0 Citations Vibration Analysis for Environmental Sustainability Published: 31 October 2014
Proceedings of The 4th World Sustainability Forum, doi: 10.3390/wsf-4-d005
Article 0 Reads 3 Citations Statistical quality control through process self-induced vibration spectrum analysis Published: 07 July 2011
The International Journal of Advanced Manufacturing Technology, doi: 10.1007/s00170-011-3462-8
The first part of this study (Carnero et al., Mechanical Systems and Signal Processing, 24:1138–1160, 2010) analysed the influence of the process variables and work cycles on the quality of the bearings manufactured in an automotive bearing plant. The study was focused on the analysis of the overall vibration reading produced by the contact between the tool and the part. An analysis of variance was conducted on the overall vibration readings, which reflected that high-frequency vibration displacements are sensitive to process setup variables as well as the quality of products manufactured. Nevertheless, it was also observed that overall vibration values are not sufficient to analyse the relationship between the mechanical behaviour (vibration) and final quality obtained from high-precision machining processes. In this article, therefore, a new study is conducted based on spectral vibration measurements. A new experiment has been designed taking as input variables the diameter and the rotating speed of the tool. The selection criterion is based on the strong influence of these two variables on high-frequency vibration displacement and quality of parts (chattering, measured in terms of Lob A and Lob B). Two identical grinding machine tools were used during the experimental phase. Output variables are high-frequency displacements and high- and low-frequency chattering. The statistical analysis used in the new experiments determines spectral bands of the process in which vibrations induced by tool–part contact relates to development of lobes in the part to be identified. The study allows identification of vibration bands that are suitable for control in order to guarantee quality of the parts produced. To achieve that goal, the concept of spectral identity of the processes has been introduced to incorporate vibration induced by the process itself in the spectrums and to differentiate that process vibration from other mechanical vibration sources.
Article 0 Reads 3 Citations Statistical quality control through overall vibration analysis Published: 01 May 2010
Mechanical Systems and Signal Processing, doi: 10.1016/j.ymssp.2009.09.007
BOOK-CHAPTER 0 Reads 0 Citations Predictive Maintenance for Quality Control in High Precision Processes
Advances in Environmental Engineering and Green Technologies, doi: 10.4018/978-1-4666-8222-1.ch009