Application of Self-Propelled Rotary Tools for Turning of Difficult-to-machine Materials

AbstractThe paper presents some aspects of turning of difficult to machine materials with self-propelled rotary tools (SPRT). The main criterion of the rotary tools performance was the attainable surface quality, waviness and adhered chips. The dependence of the insert rotational speed on cutting parameters was also investigated. Original method of measurement of this speed was developed. Obtained results showed, that the speed is lower than theoretical, reported in literature. Stiffness and run out of the tools were measured. Cutting force measurements revealed substantial run-out of the rotating insert. Some important drawbacks and limitations of SPRT application were revealed

multi sensor signal processing for catastrophic tool failure detection in turning

Abstract This paper presents a methodology aimed at the identification of a catastrophic tool failure (CTF) in turning processes based on multiple sensor monitoring. Experimental turning tests were carried out under various cutting conditions (cutting speed, feed, depth of cut) using a multi-sensor monitoring system consisting of a triaxial force sensor to acquire the three components of the cutting force and an acoustic emission sensor. Signals analysis, interpretation and processing was performed on the multi-sensor signals acquired during the turning process and relevant statistical features were extracted and used to develop a methodology for the automatic CTF detection during turning

Involuntary Disclosures And Stakeholder-Initiated Communication on Social Media

This study explores firm responses to stakeholder-initiated involuntary disclosures, which are disclosures made by stakeholders about an organization but are against the will of managers, and subsequent stakeholder reactions. We analyzed 134,977 firm Twitter replies from seven companies to identify their responses to involuntary corporate social responsibility (CSR) disclosures and find that companies demonstrate different attitudes toward engagement in the exchange about involuntary disclosures. Whereas some companies communicate with stakeholders, others are almost silent. When a company engages in communication with its stakeholders, the communication is mostly one-way, and mortification or dissent are the likely response strategies. We also find that while stakeholders generally do not continue to engage with corporate communications, they are likely to respond when companies deny the information revealed by involuntary disclosure. Our results suggest that involuntary disclosures on social media are not able to improve communication between stakeholders and companies

Pluralizm prawny. Tradycja, transformacje, wyzwania, 510 s.

Książka poświęcone tradycji, współczesności i prognozowanej przyszłości zjawiska pluralizmu prawnego. Fenomen ten został w ukazany z różnych punktów widzenia - towarzyszących mu prądów ideowych, uwarunkowań politycznych, ekonomicznych, a także zmieniającego się technicznego otoczenia życia społeczeństw, szczególnie nowych systemów masowej, horyzontalnej i wertykalnej komunikacji