Mg , Si and die geometry effects on the formability and the machinability of recycled aluminium alloys
Mg, Si and die geometry effects on the formability and machinability were experimentally reported, concerning AA6xxx aluminium alloys which were produced by recycling raw material. The aluminium alloys formability characteristics were evaluated during extrusion and open die forging tests estimating the needed load; the machinability characteristics of the same aluminium alloys were conducted via cutting force measurements during simple turning process. Key-Words: formability, machinability, Mg ratio, Si ratio, extrusion test, cutting, recycling
Formation of die lines during extrusion of AA6063
AbstractThe die line phenomenon during extrusion of AA 6063 has been investigated and the effects of temperature and strain rate established. The influence of die land length on the surface generated features was also determined. The results indicate that the surface formation mechanism is one of generation and modification; the surface is generated on the leading edge of the die land in the absence of oxygen and interacts thereafter with the remainder of the die land, resulting in material transfer between extrudate and die land, thus increasing the surface roughness. Two mechanisms were identified, both of which involved extrudate die land interaction. The aluminium film on the forward portion of the die land was observed to be more stable and its morphology wasfound to relate directly to the die line features. From these trials, optimum process conditions together with a minimum die land length were identified. Processing at the optimum conditions continued to generate die lines, but these were observe...
The data privacy / national security balancing paradigm as applied in the USA and Europe: Achieving an acceptable balance
...................................................................................................................... iii Summary ..................................................................................................................... ix Overall Introduction.................................................................................................... 1 Chapter One ................................................................................................................. 7 The Privacy/National Security Balance from a European Perspective .................. 7 Introduction ................................................................................................................ 7 Section I: The Council of Europe ............................................................................ 13 1.0 The Basis for the Data Privacy/National Security Balance .......................... 13 2.0 The Influence of the ECHR on National Legal Systems .............................. 14 3.0 The Jurisprudence of the ECtHR and the Data Privacy/National Security Balance ................................................................................................................. 27 4.0 Shortcomings in the Jurisprudence of the ECtHR The Application of the Margin of Appreciation ........................................................................................ 43 Section II: The European Union .............................................................................. 67 1.0 The European Union and Human Rights Protection in the Context of the data privacy/national security balance ......................................................................... 73 2.0 The Growing Involvement of the EU in Human Rights Protection, particularly in data protection and the circumstances influencing this. ............... 77 3.0 Data Retention Directive 2006/24/EC and the Alteration of the Data Privacy/National Security Balance ....................................................................... 79 4.0 Features of Directive 2006/24/EC ................................................................ 81 5.0 Responses to Data Retention Directive 2006/24/EC .................................... 82 6.0 Institutional Responses to Directive 2006/24/EC......................................... 94 7.0 Judgment of the CJEU (Grand Chamber) on the Validity of Directive 2006/24/EC......................................................................................................... 103 8.0 The Ruling of the CJEU ............................................................................. 105 9.0 Significance of the Digital Rights Ireland and Seitlinger Judgment and its Context ............................................................................................................... 109 10.0 Consequences of the Digital Rights Ireland Judgment for Data Privacy/National Security in Europe .................................................................. 114 11.0 Judgments of the CJEU in the Google Spain and Schrems Cases .............. 122 12.0 Developments following the Invalidation of the Safe Harbour Agreement 131 13.0 Impact of the CJEU decisions in the Digital Rights Ireland, Google Spain, and Schrems cases on the data privacy/national security balance ...................... 135 14.0 The Alternative Data Privacy/National Security Balance: Circumventing vi Data Privacy Protections in the EU: The Mass Surveillance of Personal Data by Spy Agencies in some EU Member States ..........................................................135 15.0 Two Parallel Systems of Surveillance .........................................................146 16.0 The Council of Europe Versus The European Union: Which Regime Provides Greater Protection For Data Privacy Rights? .......................................148 17.0 Contrasting the European and U.S. positions on the Balancing of Data Privacy Rights against National Security Interests .............................................153 18.0 Conclusion ...................................................................................................156 Chapter Two .............................................................................................................165 The Privacy/Security Balance in the U.S. pre-9/11 ................................................165 1.0 Introduction .................................................................................................165 2.0 U.S. Understandings of the Right to Privacy and Particularly Data Privacy .............................................................................................................................168 3.0 Major Interferences with data privacy for national security reasons pre-9/11 in the context of the data privacy/national security balance, with emphasis on the background and role of the NSA. ........................................................................179 4.0 Major Scandals Relating to Data Retention: Privacy Rights Illegally Infringed by the Executive and its Agencies .......................................................186 5.0 Church Committee Report and the Balance Between National Security and Personal Liberties Pre-9/11 .................................................................................191 6.0 Judicial Oversight of Surveillance in the name of National Security: Implications for the Data Privacy/National Security Balance. ............................194 7.0 FISA: Adjusting the Data Privacy/National Security Balance? Restricting the Interpretation of Personal Data in the Context of Intelligence Surveillance by the Executive Branch in the name of National Security ...........................................197 8.0 Balancing Rights which are Qualitatively Different: Philosophical Issues Underlying the Data Privacy/National Security Balancing Paradigm ................209 9.0 Two Data Privacy/National Security Balancing Systems Pre-9/11:The Influence of NSA Surveillance Activity. The Legal and the Actual Balances....220 10.0 Conclusion ...................................................................................................224 Chapter Three ...........................................................................................................229 The Privacy/Security Balance in the U.S. Post-9/11 ..............................................229 1.0 Introduction ...................................................................................................229 2.0 Background ...................................................................................................230 3.0 The Administration's Defence of Its Surveillance Policies and a Scholarly Response .............................................................................................................244 4.0 Ideological Context of the Patriot Act ...........................................................252 5.0 Provisions of the Patriot Act .........................................................................253