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<div class="section abstract"><div class="htmlview paragraph">The automotive industry continues to focus heavily on new electrified mobility strategies. Whether this electrified mobility consists of battery electric vehicles or electrified brake boost systems, there is a level of system sensitivity which presents new challenges throughout the industry during development of a new product. Most specifically in brake system development, much of the critical performance targets that have come along with electrification are cascaded down to the vehicle corner and its component performance. These corner level requirements have transformed to be more stringent in order to improve the overall system efficiency. It is important that the factors which lead to less than desirable performance are identified and understood. Some of the factors that influence the brake system corner performance are driven by multiple components, and this paper will go into identifying &amp; explaining the following.<ul class="list disc"><li class="list-item"><div class="htmlview paragraph">Fluid Displacement Performance/Requirements</div><ol class="list nostyle"><li class="list-item"><span class="li-label">a</span><div class="htmlview paragraph">Potential Factors of Impact in Testing ie:</div><ol class="list nostyle"><li class="list-item"><span class="li-label">i</span><div class="htmlview paragraph">Compressibility/Hot Compressibility</div></li><li class="list-item"><span class="li-label">ii</span><div class="htmlview paragraph">Bedding</div></li><li class="list-item"><span class="li-label">iii</span><div class="htmlview paragraph">Rotor Coning</div></li><li class="list-item"><span class="li-label">iv</span><div class="htmlview paragraph">Taper Wear</div></li></ol></li></ol></li><li class="list-item"><div class="htmlview paragraph">Mu Differential Observation/Factors</div><ol class="list nostyle"><li class="list-item"><span class="li-label">a</span><div class="htmlview paragraph">Rotor Manufacturing process change</div><ol class="list nostyle"><li class="list-item"><span class="li-label">i</span><div class="htmlview paragraph">Machining insert change</div></li><li class="list-item"><span class="li-label">ii</span><div class="htmlview paragraph">Turned to Ground</div></li></ol></li><li class="list-item"><span class="li-label">b</span><div class="htmlview paragraph">Dynamic</div><ol class="list nostyle"><li class="list-item"><span class="li-label">i</span><div class="htmlview paragraph">Dyno Cooling air direction differences</div></li></ol></li><li class="list-item"><span class="li-label">c</span><div class="htmlview paragraph">Static</div></li><li class="list-item"><span class="li-label">d</span><div class="htmlview paragraph">Future Mobility Technology</div><ol class="list nostyle"><li class="list-item"><span class="li-label">i</span><div class="htmlview paragraph">Forward vs reverse direction/transfer layer</div></li></ol></li></ol></li></ul></div></div>

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<div class="section abstract"><div class="htmlview paragraph">New technologies, such as electrified powertrain and autonomous driving solutions, are transforming the automotive industry in such a way that achieving vehicle level performance requirements demands an increasingly intensive and detailed system integration exercise. Validation of the braking system, critical to any vehicle level project, must evolve so that the ever-increasing requirements cascade is answered in a way that ensures the highest level of safety and performance as the industry moves toward a new frontier of features. To support this evolution of integration methodology, critical-to-performance components, such as brake pads, must undergo a transformation in how performance metrics are characterized, communicated, and documented. It is essential that the physical properties of brake pads are measured accurately with standardized procedures and represent a set of characteristics that directly relate to system (brake caliper) interaction, which results in a robust cascade of requirements. Recommendations are listed below for some key brake pad topics which will be discussed in detail within this paper.<ol class="list nostyle"><li class="list-item"><span class="li-label">1</span><div class="htmlview paragraph">Standardization for Pad Assembly Compressibility Gage Repeatability and Reproducibility (RandR)</div></li><li class="list-item"><span class="li-label">2</span><div class="htmlview paragraph">Industry-wide discrepancies of process capability requirements for short term &amp; long-term for Pad Assembly Compressibility</div></li><li class="list-item"><span class="li-label">3</span><div class="htmlview paragraph">Is it correct to combine geometric effects &amp; material modulus into a singular deflection test?</div></li><li class="list-item"><span class="li-label">4</span><div class="htmlview paragraph">Utilizing additional measurements and analysis opportunities for improved understanding to product performance</div></li></ol></div></div>

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