Ultrasonic Cut Process

Labor Time =

Labor Dependent Process Time * Labor Time Standard

Labor time is the product of the following:

• Labor-dependent process time: this is the sum of the values of the formula Labor Dependent Process Time (the cutting times) for all the child operations. See Ultrasonic Cutting Operation.

• Labor time standard: specified as the machine property Labor Time Standard. This multiplier is used to account for otherwise unaccounted for factors that affect labor time, such as operator fatigue or time spent by the operator for cleaning or maintenance.

Cycle Time =

(Labor Independent Process Time +

(Labor Dependent Process Time / Number of Operators)) *

Cycle Time Adjustment Factor

Cycle time depends on the following:

• Labor-dependent process time: this is the sum of the values of the formula Labor Dependent Process Time (identing and unloading times) for all the child operations. See Ultrasonic Cutting Operation.

• Labor-independent process time: this is the sum of the values of the formula Labor Independent Process Time (the cutting times) for all the child operations. See Ultrasonic Cutting Operation.

• Number of operators: by default, this is specified by the machine property Number of Operators. Users can override the default on a per-part basis with the setup option Number of Operators.

Batch Setup Cost per Part =

(Setup Time per Part * (Labor Rate + Direct Overhead Rate))

This includes costs for moving rolls of raw material from cold storage, loading rolls onto the machine, and unrolling machine-table-length sections as many times as required for cutting all the part’s plies. Batch setup cost per part depends on the following:

• Setup time per part (see formula)

• Labor rate (specified by the machine property Labor Rate)

• Direct overhead rate (see Direct and Indirect Overhead)

Setup Time Per Part = Raw Material Handling Time + Unroll Raw Material Time

Setup time per part is the sum of the following:

• Raw material handling time: this is the time to move each required roll of raw material from Cold Storage to room-temperature soak, plus the time to load each roll onto the machine once the soak is complete. The soak time is assumed to incur no overhead. The number of required rolls is assumed to be the number of different material types used by the part’s plies. The handling time for a given material type is specified by the material property Raw Material Handling Time.

• Unroll raw material time (see formula)

Unroll Raw Material Time =

(Machine Table Length / Unroll Raw Material Rate) *

Number of Required Table-length Sections

This is the time to unroll table-length sections of raw material as many times as required for cutting all the part’s plies. It depends on the following:

• Machine table length: specified by the machine property Table Length.

• Unroll raw material rate: specified by the cost model variable unrollRawMaterialRate (1400mm/sec in starting point VPEs).

• Number of required table-length sections (see formula). This is the sum of the number of sections required by each material type. See the formula below.

Number of Required Table-length Sections for a Given Material Type =

roundup(Total Area of Plies / Material Utilization) / Machine Table Area

For a given material type, the number of required table-length sections of raw material depends on the following:

• Total area of plies: this is the sum of the surfaceAreas of the plies of the given material type.

• Material utilization: this is the value of the material property Material Utilization for the given material type

• Machine table area: this is the product of the machine properties Table Length and Table Width.