轮辋保险杠罩的制造经过了不断改进。内部脱模轮辋系统、使用填料改善性能、自动化高质量喷漆用于制造最高质量、最低成本的产品。SPC和设计实验用于日常制造和新工艺评估。采用定向玻璃纤维预制件工艺开发了结构边缘梁。这些概念结合在一起，设计和制造了一个模块化集成前端（MIFE），包括一个完整的轮辋蒙皮、DAVISORB聚氨酯泡沫能量吸收器和一个结构轮辋梁/支架。 本文描述了这些变化，并讨论了聚脲车身面板和其他低成本轮辋蒙皮选项，以供未来设计和制造。

THE MANUFACTURING OF RIM BUMPER COVERS HAS EVOLVED THROUGH CONTINUOUS IMPROVEMENT. INTERNAL MOLD RELEASE RIM SYSTEMS, THE USE OF FILLERS FOR IMPROVED PROPERTIES, AUTOMATED HIGH-QUALITY PAINTING ARE USED TO MANUFACTURE THE HIGHEST-QUALITY, LOWEST-COST PRODUCT. SPC AND DESIGNED EXPERIMENTS ARE USED IN DAY-TO-DAY MANUFACTURING AND NEW PROCESS EVALUATIONS. STRUCTURAL RIM BEAMS HAVE BEEN DEVELOPED WITH THE DIRECTED FIBER GLASS PREFORM PROCESS. THESE CONCEPTS HAVE BEEN COMBINED TO DESIGN AND BUILD A MODULAR INTEGRATED FRONT END (MIFE), CONSISTING OF A FULL RIM FASCIA, DAVISORB URETHANE FOAM ENERGY ABSORBER AND A STRUCTURAL RIM BEAM/SUPPORT. THIS PAPER DESCRIBES EACH OF THESE CHANGES AND DISCUSSES POLYUREA BODY PANELS AND OTHER LOW-COST RIM FASCIA OPTIONS FOR FUTURE DESIGN AND MANUFACTURE.