NASA HiCAM_ RFI AFP AIS_Features Table_Unpopulated_03-31-2025.xlsx
XLSX spreadsheet 14 KB Posted
- Attached to
- Automated Inspection System
- Solicitation number
- 80LARC25RFI_AFP_AIS
About this file
This document is a NASA Request for Information (RFI) Features Table for an Automated Inspection System (AIS) related to the High-rate Composites for Aircraft Manufacturing (HiCAM) Project. The detailed spreadsheet outlines 32 specific feature requirements for inspecting automated fiber placement (AFP) composite manufacturing processes, including measurement criteria for various attributes such as tow gaps, overlaps, splice presence, wrinkles, fuzzballs, and foreign object debris (FOD). The features are categorized by detection percentage (100%, 90%, 70%), measurement type (continuous or attribute), and specific characteristics like presence/absence, length, width, and location.
The RFI seeks to address current limitations in AFP inspection technologies by developing a standardized inspection system capable of ply-by-ply inspection of carbon fiber reinforced polymer (CFRP) during manufacturing. NASA's primary objective is to support high-rate aircraft production (up to 80 aircraft per month) by improving inspection processes that currently rely heavily on manual/visual methods. The agency has partnered with the U.S. aircraft manufacturing industry to define inspection requirements and identify a commercially available or developable AIS system that can meet these standardized criteria, with the ultimate goal of reducing manufacturing costs and time while maintaining structural integrity.
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| File | Type | Posted |
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| HiCAM_GPE-RFI on Auto Insp System__Final 03-31-2025.pdf |
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AFP Features Table
| Row/ Column # | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 10 | |
| 1 | Feature | Key AFP Feature? | |||||||
| pe381d: See "Assumptions" tab for "Key AFP Feature" definition. | Feature Type | Feature Dimension to be Measured? |
Steven K Brady: Steven K Brady:
See "Measurement Criteria" tab. Feature LOCATION in a layup is described there, and should not be listed here.
| Spirit: There needs to be a distinction between 2D vs 3D requirements and real time vs post processing analysis (closed vs open loop) | Size Detectable 100% of the time | Size Detectable ≥ 90% of time | Size Detectable ≥ 70% of time | Measurement Fidelity | |
| 2 | Individual Tow Gap | Yes | Continuous | Width (in) | |
| 3 | Individual Course Gap | Yes | Continuous | Width (in) | |
| 4 | Individual Tow Overlap | Yes | Continuous | Width (in) | |
| 5 | Individual Course Overlap | Yes | Continuous | Width (in) | |
| 6 | Tow End Location | Yes | Continuous | -Distance from nominal (in) | |
| 7 | Ply Edge Location | Yes | Continuous | -Distance from nominal (in) | |
| 8 | Ply/Course Orientation | No | Continuous | -Angular offset from nominal in degrees | |
| 9 | Tow Splice | Yes |
Sayata Ghose: Sayata Ghose:
Yes per Spirit
Vanny Sok:
| Should be yes per NGC | Attribute | Presence / Absence | |||
| 10 | Wrinkles | No | Attribute (Continuous) | Presence / Absence: Length, Depth (Height) (in) | |
| 11 | Puckers | No | Continuous | Presence/Absence: -Height and length (in) | |
| 12 | Twisted Tow | Yes | Attribute (Continuous) | Presence/Absence: -length (in) | |
| 13 | Edge Folds | No | Attribute (Continuous) | Presence/Absence |
-Length -% of tow folded over 14 V Folds (Tow Ends) No Attribute (Continuous) Presence/Absence -Length (in) -% of tow folded over 15 Untacked Tow No Attribute (Continuous) Presence/Absence -Length (in) -Untack height(in) 16 Missing Tow Yes Attribute (Continuous) -Presence/Absence Length (in) 17 Bridging No Attribute (Continuous) Presence/Absence -Length (in) -Height (in) 18 Damaged Tow No Attribute (Continuous) -Length of damage (in) -Width of damage (in)
| 19 | Extra Tow | Yes | Attribute (Continuous) | -Presence/Absence |
| 20 | Blown Tow | No | Attribute | -Presence/Absence |
| 21 | Whiskers | No | Attribute (Continuous) | -Presence/Absence |
-Length 22 Stringer No Attribute (Continuous) -Presence/Absence -Gap widths should still be accurately measured (see Tow Gap and Course Gap, above) 23 Fuzzball - Surface Yes pe381d: Vanny Sok:
NGC says yes
Boeing (Brady): Yes Attribute (Continuous) -Presence/Absence -Size (major diameter) (in) 24 Fuzzball - Buried Yes pe381d: Vanny Sok:
NGC says yes
Boeing (Brady): Yes Sayata Ghose: Sayata Ghose:
Yes per Spirit
Vanny Sok:
Should be yes per NGC Attribute (Continuous) -Presence/Absence -Size (major diameter) (in) 25 Resin Ball - Surface No Attribute (Continuous) -Presence/Absence -Size (in) 26 Resin Ball - Buried No Attribute (Continuous) -Presence/Absence -Size (in) 27 FOD - Films - Surface Yes Attribute (Continuous) Presence/Absence -Area (in2) -Shape 28 FOD - Films - Buried No Attribute (Continuous) Presence/Absence -Area(in2) -Shape -Ply depth 29 FOD - Particulate - Surface No Attribute (Continuous) Presence/Absence -Particle sizes (in) -Particle count 30 FOD - Particulate - Buried No Attribute (Continuous) Presence/Absence -Particle sizes (in) -Particle count -Ply depth (in) 31 FOD - Liquid - Surface No Attribute (Continuous) Presence/Absence -Affected area(in2) -Amount of liquid 32 FOD - Liquid - Buried No Attribute (Continuous) Presence/Absence -Affected area(in2) -Amount of liquid -Ply depth (in)
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