Processing Machinery
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PMMA Sound Barrier
Fenómeno del problema
PMMA sheets of highway sound barriers become brittle after several years
Análisis de la causa
Long-term outdoor aging plus wind load vibration embrittles and cracks the sheets; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry literature and should be confirmed first during troubleshooting
Solución
Choose thickened UV-resistant sheets for sound barriers; vibration damping in the installation structure; inspect and replace according to service years; after adjustment, take samples continuously to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Conclusión clave
Sound barriers are selected and maintained according to outdoor structural part standards; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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