---
title: "Blade Assembly"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:BLADE_ASSEMBLY"
  data_integrity_hash: "10b6a842ba291b2aae12e417a37b5042"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:BLADE_ASSEMBLY"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/blade-assembly.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/blade-assembly"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-2.5 m/s airflow velocity, 0-90° angular deflection, -40°C to 120°C temperature range"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 250
    unit: "MPa"
    consequence: "Fatigue failure from cyclic aerodynamic loading at 10^6 cycles (S-N curve), stress concentration at blade root fillet (Kt=2.8), galvanic corrosion between aluminum blades and steel frame (0.5V potential difference)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Resonant vibration at 85-95 Hz matching blade natural frequency"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Stiffness tuning to shift natural frequency to 110 Hz, damping ratio increased to 0.15"
  - node_2:
      trigger: "Ice accretion exceeding 5 mm thickness on leading edges at -10°C with 85% humidity"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Electrothermal de-icing system activating at -5°C, hydrophobic coating with contact angle &gt;150°"
bom_nodes:
  blade:
    type: "component"
    urn: "URN:CNFX:ME:BLADE"
    interface_type: "physical-logic-coupled"
  pivot-pinbearing:
    type: "component"
    urn: "URN:CNFX:ME:PIVOT_PINBEARING"
    interface_type: "physical-logic-coupled"
  linkage-rod:
    type: "component"
    urn: "URN:CNFX:ME:LINKAGE_ROD"
    interface_type: "physical-logic-coupled"
  end-framechannel:
    type: "component"
    urn: "URN:CNFX:ME:END_FRAMECHANNEL"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 1940-1:2003 - MECHANICAL VIBRATION - BALANCE QUALITY REQUIREMENTS FOR ROTORS IN A CONSTANT (RIGID) STATE"
    scope: "Verified Engineering Specification"
  - standard: "ANSI B94.55M-1985 (R2016) - SPECIFICATIONS FOR THE DESIGN OF INDUSTRIAL KNIVES AND BLADES"
    scope: "Verified Engineering Specification"
  - standard: "DIN 3962-2:1978 - TOLERANCES FOR CYLINDRICAL GEAR TEETH; TOLERANCES FOR TOOTH THICKNESS AND BACKLASH"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/blade-assembly.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "0faee6485674afccb1c0660c764792d6a1e4194e8fc1b685ce879ec5760456c5"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Blade Assembly

## 1. Technical Definition
A set of blades arranged in a frame that controls airflow, light, or visibility in dampers and louvers.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.5 m/s airflow velocity, 0-90° angular deflection, -40°C to 120°C temperature range**. Failure boundary: **Material yield strength exceeded at 250 MPa stress, blade deflection &gt;15° from neutral position, bearing wear &gt;0.5 mm clearance**, Mechanism: **Fatigue failure from cyclic aerodynamic loading at 10^6 cycles (S-N curve), stress concentration at blade root fillet (Kt=2.8), galvanic corrosion between aluminum blades and steel frame (0.5V potential difference)**.

### 2.1 Analytical Physics Model
Governed by the **L10 Bearing Life & Fatigue Model**:

> **Primary Equation**: $L_{10} = (\frac{C}{P})^p$  
> **Engineering Impact**: Predicts mechanical lifecycle before component fatigue.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| C | Dynamic Load Rating | Engineering Constant |
| P | Equivalent Dynamic Load | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Resonant vibration at 85-95 Hz matching blade natural frequency | 8 | High-cycle fatigue fracture at blade root stress risers | Stiffness tuning to shift natural frequency to 110 Hz, damping ratio increased to 0.15 |
| Ice accretion exceeding 5 mm thickness on leading edges at -10°C with 85% humidity | 8 | Mass imbalance causing 0.8g vibration amplitude, bearing seizure | Electrothermal de-icing system activating at -5°C, hydrophobic coating with contact angle &gt;150° |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Sheet Metal Press Brake**, **Laser Cutting System**, **Automated Assembly Fixture**  
**Downstream Applications**: HVAC Dampers, Industrial Louvers, Ventilation Grilles  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are available for blade assemblies in machinery manufacturing?
**A**: Our blade assemblies are available in aluminum for lightweight applications, galvanized steel for corrosion resistance, and stainless steel for harsh environments.

### Q: How do blade assemblies control airflow in industrial dampers?
**A**: Blade assemblies consist of multiple blades arranged in a frame that can be adjusted via linkage rods and pivot pins to regulate airflow direction and volume in dampers and louvers.

### Q: What components are included in a typical blade assembly BOM?
**A**: A complete blade assembly includes blades, end frames/channels for structural support, linkage rods for synchronized movement, and pivot pins or bearings for smooth rotation.

## 6. Manufacturing Compliance
- ISO 1940-1:2003 - MECHANICAL VIBRATION - BALANCE QUALITY REQUIREMENTS FOR ROTORS IN A CONSTANT (RIGID) STATE
- ANSI B94.55M-1985 (R2016) - SPECIFICATIONS FOR THE DESIGN OF INDUSTRIAL KNIVES AND BLADES
- DIN 3962-2:1978 - TOLERANCES FOR CYLINDRICAL GEAR TEETH; TOLERANCES FOR TOOTH THICKNESS AND BACKLASH

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Blade Assembly](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/blade-assembly)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: BLADE_ASSEMBLY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: adc9bd04
