Potential Effects on Human Safety and Health from Infrasound and Audible Frequencies Generated by Vibrations of Diesel Engines Using Biofuel Blends at the Workplaces of Sustainable Engineering Systems

Employees involved in various occupational environments that include vibration machines and any kind of vehicles are adversely subjected to multiple source noise. Thus, the corresponding noise frequencies (and mainly infrasound ones) present high interest, especially from viewpoint sustainability, due potential effects on human safety health (H_S&H) sustainable engineering projects. Moreover, (OSH) visualization (a fact unveiling social dimension sustainability) workplaces (by evaluating audible generated by diesel engines) could help a officer lessen crucial risk factors OSH field also protect, more efficiently, employees taking most essential measures. This study (i) suggests technique determine sound produced vibrations engines, using biofuels (i.e., utilization resources), order evaluate at projects, (ii) it ultimately aims contribute improvement three “sustainability pillars” (economy, social, environmental). Therefore, provides experimental results frequency (regarding spectrum) motor generates vibration, frame different engine rpms (850, 1150, 2000) variety biofuel mixtures (B20-D80, B40-D60, B60-D40, B80-D20). The article shows fuel blend meaningfully affects noise, particularly, usage blends coming mixing oil with biodiesel emerging environmental can produce frequencies, which determined spectra (~10–23 Hz). suggested technique, ameliorating situation, doubtless will enterprises achieve finest allocation limited financial resources economic sustainability), allowing managers have available budget for implementing other risk-reduction