MANUFACTURE METHODOLOGY
Manufacture impacts are measured at components and device level with a bottom-up approach.
Allocation
Manufacture impacts can be reported with several allocation strategies.
Over the lifecycle - Allocation: TOTAL
The total manufacturing impacts are reported independently of the usage.
manufacture_impact = total_impact
Hover a specific duration - Allocation: LINEAR
The manufacturing impacts are linearly distributed over the life duration of the devices. The impacts are reported over the usage duration.
manufacture_impact = total_impact * (usage_duration/life_duration)
Variable components impacts
The impact of variable components are evaluated from the components characteristics.
Fixed components impacts
The impact of fixed component are set by default
Device impacts
Device impacts are evaluated from the sum of components impacts. Other treatments can be applied depending on the device.