Questions and Answers 3D X-Ray and CT Capability.xlsx
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- Attached to
- Call for Solutions for Advanced Manufacturing Industrial 3D X-Ray and Computed Tomography Capability
- Solicitation number
- PANRSA26P0000037977
About this file
This file is a Questions and Answers document addressing technical specifications and procedural inquiries for the Army's Call for Solutions for Advanced Manufacturing Industrial 3D X-Ray and Computed Tomography Capability. The Q&A clarifies multiple specification discrepancies identified by potential offerors, confirming that several typographical errors in the original solicitation have been corrected in an amended Call for Solutions, including weight capacity conversions (5,000 lbs. versus 453 kg), X and Y-axis travel measurements (43 inches equating to 109 cm and 50 inches to 127 cm), and focal spot size requirements.
Regarding technical requirements, the document confirms that the solution must incorporate both a 225kV Microfocus configuration for high-resolution work and a 450kV Minifocus configuration for higher energy penetration, with the focal spot size specification having been amended from the original 2-micron requirement. A dual detector is designated as desirable rather than mandatory, with specifications for a 4343N DRZ+ DDA and 36"/400m LDA. The system must accommodate multiple material types including aluminum, titanium, and nickel alloys (Inconel), with part envelopes of 32" x 48" acceptable for X and Y dimensions. Primary applications include detecting internal porosity, gas voids, lack-of-fusion defects, and trapped powder in 3D-printed titanium components, as well as inspecting cold spray, laser cladding, and welds for delamination and interface voiding. A non-walk-in radiation cabinet enclosure is acceptable, and a rotary stage weight capacity of 500 pounds is acceptable rather than the originally stated 5,000 pounds. Site Acceptance Testing requirements specify verification of safety systems, source specifications, detector performance, motion system accuracy, and software functionality including DR/CT acquisition, reconstruction, and export formats. The Call is open to any vendor regardless of small business status.
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AdvM 3D X-Ray and CT Capability
| Question # | Category | Question | Answer |
| 1 | Technical Specifications | Regarding Part Weight Capacity the Call states, "Minimum weight capacity of 5,000 lbs. (453 kg) on the internal rotary axis stage without degradation of motion precision or rotation speed." Is the minimum weight capacity of 5,000 lbs. correct, as the document states 453 kg after. | This is a typo and has been corrected in an amended Call for Solutions. |
| 3 | Technical Specifications | In section 3: Weight capacity for the rotary stage is stated as 5,000 lbs., but in parentheses 450 Kg. is noted. Can you clarify? | See answer to question 1. |
| 2 | Technical Specifications | We do not have a 450 kV microfocus tube and I do not know of any vendors capable of achieving 2 micron focal spot size at that power. We do not have a dual detector, only DDA. Are a 450 kV microfocus tube and dual detctor mandatory requirements? | The Spot Size was amended in the Call for Soultion. A dual detector is desirable. |
| 4 | Technical Specifications | The X-travel specification states 43 inches with a corresponding centimeter equivalent of 127cm and the Y-axis specification states 50 inches and 190 cm. Both metric conversions appear incorrect as 43” equates to 109 cm and 50” equates 127 cm. Can you clarify and correct these specifications? | This is a typo and has been corrected in an amended Call for Solutions. |
| 5 | Application Scope | Can you provide more details on the general scope of the application? Specifically, what range of materials (e.g., aluminum, titanium, Inconel) will be inspected, and what are the general expectations for the results? | The solution shall inspect a range of materials including aluminum, titanium, and nickel alloys (e.g., Inconel). The general scope of the application focuses on two primary areas: To detect and map internal porosity, gas voids, lack-of-fusion defects, and trapped powder within complex, 3D-printed titanium components prior to post-processing. To inspect the integrity of cold spray, laser cladding, and welds (checking for delamination or interface voiding), perform wall thickness measurements for internal wear/corrosion. |
| 6 | Procedural Questions | What are the selection criteria for being invited to present in person (Reference Section 5)? | Phase 2 submission requirements and evaluation criteria will be outlined in the invitation to this phase, unless bypassed. |
| 7 | Procedural Questions | Can an extension be granted for scheduling presentations? | All Phase invitations will provide schedule and submission instructions. |
| 8 | Technical Specifications | The SOW specifies a 450kV source with a 2-micron spot size. 2-3 microns is possible on a 225kV source, but no 450kV will produce that small of a spot. That’s industry wide. Please clarify the required focal spot size for the 450kV source, or confirm if a lower-voltage is acceptable to meet the 2-micron resolution requirement? | See answer to question 2. |
| 9 | Application Scope | Can you share any details to the extent permissible regarding the scope of materials that will be inspected on this system? For example, aluminum, titanium, Inconel, etc. |
Can you share any details to the extent permissible as to size, weight and shape of samples that will be inspected?
| We expect to be able to handle mutiple material types and the minimum volume should be consistent with LBPF printers. | |||
| 10 | Technical Specifications | The solicitation calls for Mini Focus and Micro Focus configuration. Please clarify what configuration is being requested? For example, 225 Microfocus and 450 MiniFocus? | The requested configuration is both the 225kV Microfocus for high‑resolution work and 450kV Minifocus for higher energy/penetration |
| 11 | Technical Specifications | The solicitation is asking for Advanced Defect Recognition in one area and Autonomous Automated Defect Recognition under Advanced Modalities. |
Please confirm what the end user is requesting?
| The second reference is the full description of the need. | |||
| 12 | Technical Specifications | Regarding Radiation Cabinet Enclosure - Is a non-walk in enclosure acceptable? | Yes, that is acceptable based on the volume requested. |
| 13 | Technical Specifications | Regarding Part Weight Capacity - |
Please clarify this section. Our’s offers a rotary axis stage capable of 500 lbs which still allows for table tilt and a High Load Turntable that is capable of 1500 lbs but eliminates the ability to tilt.
| We do not anticipate needing more than 500 pounds of capacity. | ||
| 14 | Technical Specifications | Regarding Scanning Envelope & Travel - |
Our Nominal Part Envelope for our offering is 32” x 48” will this be acceptable?
| For x and y dimensions that area is acceptable. | |||
| 15 | Technical Specifications | Regarding Detector System - Please specify which DDA and LDA to quote. | 4343N DRZ+ DDA and a 36"/400 µm LDA |
| 16 | Technical Specifications | Regarding Software & Compliance - Our software does not export a STEP or IGES file. VG Studio Max which is called out in solicitation, will be able to comply with this ask. |
Is this acceptable?
| This is acceptable. | |||
| 17 | Technical Specifications | Regarding Site Acceptance Testing (SAT) - Please specify clearly what exactly the end user is looking for in an SAT. | Safety & enclosure: verify cabinet interlocks, shutter operation, laser alignment, emergency stops. |
Sources: verify 225kV microfocus and 450kV focal spot measurement Detectors: Confirm DDA 4343N DRZ+ performance and LDA line performance.
Motion System: Verify ±20° tilt, rotation resolution, X & Z travels, and lateral shift. Confirm geometric accuracy.
Software: Demonstrate DR/CT acquisition (including ring‑reduction, fast CT), reconstruction, local recon, export formats, etc.
vorteX performance mosaiX performance subpiX performance Verify X‑ray Simulation Software representative of the delivered system.
18 Procedural Questions To be eligible for award, offerors must: Are you considering businesses that are not considered a small business? This Call is open to any vendor.
Recommendations https://armyeitaas-my.sharepoint-mil.us/personal/morgan_p_mcgee2_civ_army_mil/Documents/Documents/CCAM-CAC-B/Call%20for%20Solution%20-%20Advanced%20Manufacturing/3d%20X-Ray%20and%20CT%20Capability/Q&A/Recommendations_Call%20for%20Solutions-%20AdvM%20for%203D%20X-Ray%20and%20CT%20Capability.pdf
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